Interactive Grammar, Spelling and Punctuation Exercises Problems with Parenthetical Phrases Exercise Who or Whom? Prepositional Phrase or Infinitive Exercise Redundancy Exercise 2 Double Negatives Exercise Noun Strings Exercise Strong-Comma Semicolons Exercise Job and Office Titles Exercise Adjective and Adverb Phrases Exercise Redundancy Exercise 2 Consistency of Verb Tense Exercise Confused Words Exercise 2 Subject-Verb Agreement Exercise Question Marks Exercise Parentheses Exercise Suspensive Hyphenation Exercise Colons Exercise Large Numbers Exercise Months, Days, and Years in Dates Exercise Geographical and Geopolitical Names Exercise Parallel Lists Exercise Compound Nouns Exercise 2 Academic Subjects, Courses, and Lectures Exercise Partial Quotations Exercise Confused Words Exercise 4 Compound Nouns Exercise 3 Latinate Abbreviations Exercise Suspensive Hyphenation Exercise 2 Phrasal Adjectives Exercise 2 Spelling Test Exercise 2 Parallel Sentence Structure Exercise 2 Em Dashes Exercise Punctuation Within Parenthesis Exercise Tense Shift Exercise Confused Words Exercise 5 Punctuating Parenthetical Interjections Exercise Basic Number Rules Exercise Compound Nouns Exercise 4 Spelling Test Exercise 3 Punctuation of Parenthetical Words and Phrases Exercise Restrictive Phrases Exercise “Not Only… But Also” Exercise Confused Words Exercise 6 Phrasal Adjectives Exercise 3 Redundancy Exercise 3 Spelling Test Exercise 4 Punctuation with Attribution Exercise Compound Nouns Exercise 5 Simplifying Sentences Exercise 2 Whether or Not Exercise Confused Words Exercise 7 Idiomatic Expressions Exercise 2 Compound Nouns Exercise 6 Tense Shifts Exercise Ellipsis Exercise 2 Spelling Test Exercise 5 Confusion of a Thing and Its Name Exercise Spelling Test Exercise 79 Attaching Prefixes to Words Exercise 2 Phrasal Verbs Exercise 2 Confused Words Exercise 98 Capitalization Exercise 10 Confused Words Exercise 23 Wordiness Exercise Spelling Test Exercise 24 Punctuating Sentences Exercise Transitive Verbs Exercise Capitalization Exercise 4 Apostrophes Exercise 3 Expletives Exercise Hyphens in Headlines Exercise Confused Words Exercise 8 Unclear Antecedents Exercise Compound Nouns Exercise 7 Spelling Test Exercise 6 Confused Words Exercise 9 Dangling Modifiers Exercise 2 Parallel Run-In Lists Exercise 2 Confused Words Exercise 39 Hyphenation in References to Numbers Exercise Compound Nouns Exercise 8 Dangling and Misplaced Modifiers Exercise Confused Words Exercise 10 Spelling Test Exercise 7 Diction Exercise 8 Not Only . . . But Also Exercise Spelling Test Exercise 10 Spelling Test Exercise 9 Spelling Test Exercise 8 Spelling Test Exercise 12 Spelling Test Exercise 11 Prepositions Exercise 5 Spelling Test Exercise 14 Punctuation Exercise 10 Spelling Test Exercise 13 Verbs Exercise 5 Spelling Test Exercise 63 Redundancy Exercise 5 Coordinate and Noncoordinate Adjectives Exercise 2 Confused Words Exercise 40 Hyphenation Exercise 4 Accept and Except Exercise Punctuating Days, Dates, and Times Exercise Prefixes and Suffixes Exercise Punctuation Exercise 11 Dangling Participles Exercise 5 Spelling Test Exercise 45 Prepositions Exercise 6 Spelling Test Exercise 64 Confused Words Exercise 41 First-Person Pronouns Exercise Compound Nouns Exercise 10 Spelling Test Exercise 25 Parts of Speech Exercise Punctuation Exercise 12 Conciseness Exercise 2 Confused Words Exercise 24 Apostrophes Exercise 2 Spelling Test Exercise 65 Quotation Marks Exercise 3 Commas Exercise 4 Clauses Exercise 2 Diction Exercise 3 Apostrophes Exercise 4 Irregular Verbs Exercise 5 Confused Words Exercise 56 Latin Terms Exercise Spelling Test Exercise 26 Parallel Structure Exercise 4 Some and Any Exercise Semicolons Exercise Capitalization Exercise 7 Dashes Exercise Commas with Conjunctions Exercise Spelling Test Exercise 66 Verb Tense Exercise 2 Verb Phrases and Compounds Exercise Proverbs Exercise Idiomatic Phrases Exercise 2 Spelling Test Exercise 16 Quotation Marks Exercise 2 Spelling Test Exercise 15 Spelling Test Exercise 17 Spelling Test Exercise 67 Spelling Test Exercise 19 Spelling Test Exercise 18 Gerund or Participle Exercise Verb Usage Exercise Idioms with Get Exercise Verb Tense Exercise 3 Confused Words Exercise 42 Spelling Test Exercise 46 Spelling Test Exercise 21 Spelling Test Exercise 20 Sentence Structure Exercise Spelling Test Exercise 23 Subject-Verb Agreement Exercise 3 Spelling Test Exercise 22 Subject-Verb Agreement Exercise 2 Spelling Test Exercise 27 Diction Exercise 9 Nominalized Verbs Exercise Confused Words Exercise 25 Hyphens Exercise 31 Objects Exercise Confused Words Exercise 71 Spelling Test Exercise 28 Diction Exercise 4 Parallel Structure Exercise 11 Conciseness Exercise 3 Punctuation Exercise 28 Spelling Test Exercise 47 Confused Words Exercise 26 Spelling Test Exercise 80 Misplaced Modifiers and Dangling Participles Exercise Present Tense Verbs Exercise Confused Words Exercise 43 Capitalization Exercise 3 Capitalization Exercise 2 Restrictive and Nonrestrictive Constructions Exercise Pronouns Exercise 7 Spelling Test Exercise 29 Possessive Apostrophes Exercise 2 Confused Words Exercise 27 Verb Tense Exercise 4 Personal Pronouns Exercise 2 Redundancy Exercise 18 Diction Exercise 10 Periods with Abbreviations Exercise Hyphens Exercise 6 Spelling Test Exercise 48 Direct and Indirect Objects Exercise Confused Words Exercise 72 Parallel Structure Exercise 12 Spelling Test Exercise 30 Confused Words Exercise 44 Subject-Verb Agreement Exercise 4 Reflexive Pronouns Exercise Punctuation Exercise 29 Pronouns Exercise 8 Pronouns Exercise 3 Pronouns Exercise 2 Irregular Verbs Exercise 2 Vocabulary Exercise Pronouns Exercise 5 Pronouns Exercise 4 Adjective or Adverb? Exercise Punctuating Introductory Phrases Exercise Irregular Verbs Exercise 3 Confused Words Exercise 13 Punctuation Exercise 13 Confused Words Exercise 12 Confused Words Exercise 11 Confused Words Exercise 15 Confused Words Exercise 14 Compound Words Exercise 8 Confused Words Exercise 17 Confused Words Exercise 16 Punctuation Exercise 30 Confused Words Exercise 19 Confused Words Exercise 18 Dangling and Misplaced Modifiers Exercise 4 Diction Exercise 11 Confused Words Exercise 45 Confused Words Exercise 20 Spelling Test Exercise 49 US Slang Exercise Confused Words Exercise 22 Confused Words Exercise 21 Restrictive and Nonrestrictive Clauses Exercise 3 Hyphenation Exercise 2 If Clauses Exercise 2 Possessive Adjectives Exercise Who vs. Whom Exercise Diction Exercise 2 Hyphens with Numerals Exercise Homonyms Exercise Smothered Verbs Exercise 2 Restrictive and Nonrestrictive Clauses Exercise 2 Possessive Apostrophes Exercise Dangling and Misplaced Modifiers Exercise 2 Redundancy Exercise 6 Punctuation Errors Exercise Spelling Test Exercise 50 Idioms Exercise 3 Verb Tense Exercise 5 Pronoun Case Exercise Something Missing Exercise Pronoun Agreement Exercise 2 Punctuation Exercise 14 Less or Fewer Exercise Punctuation Exercise 59 Misunderstood Expressions Exercise One-Word Speech Exercise Negative Prefixes Exercise 2 Possessives Exercise 2 Lay and Lie Exercise Years, Decades, and Centuries Exercise Parallel Construction Exercise 2 Synonyms Exercise Commas Exercise 2 Prepositions and Adjectives Exercise Forming Plurals Exercise Parallel Construction Exercise 3 Hyphens Exercise 2 Commas Exercise 3 Quotations Exercise Adjectives and Nouns Exercise Ambiguity Exercise Dangling and Misplaced Modifiers Exercise 3 Subjects and Direct Objects Exercise Verb Tense Exercise 6 Compounds with Prefixes Exercise Preposition or Adverb? Exercise Confused Words Exercise 3 What’s Wrong with These Headlines? Verb Forms Exercise Spelling Test Exercise 51 Dangling Participles Exercise 3 Compound Nouns Exercise 9 Commas with Dates and Addresses Exercise Pronoun-Verb Agreement Exercise Verbs Exercise 6 There Is / There Are Exercise Prepositions Exercise 2 Capitalization Exercise 5 Passed and Past Exercise Adjective Choice Exercise Confused Words Exercise 46 Spelling Test Exercise 52 Diction Exercise 12 Pronouns Exercise 9 Spelling Test Exercise 86 Spelling Test Exercise 85 Spelling Test Exercise 84 Spelling Test Exercise 90 Spelling Test Exercise 89 Spelling Test Exercise 88 Spelling Test Exercise 87 Capitalization Exercise 15 Capitalization Exercise 14 Capitalization Exercise 13 Spelling Test Exercise 91 Confused Words Exercise 84 Confused Words Exercise 83 Capitalization Exercise 16 Confused Words Exercise 88 Confused Words Exercise 87 Confused Words Exercise 86 Confused Words Exercise 85 Subjunctive Mood Exercise Plurals Exercise Prefixes Exercise 2 Confused Words Exercise 57 Hyphenation Exercise 5 Adjective-Noun Phrases Exercise Punctuation Exercise 21 Dangling Modifiers Exercise 3 Pronouns Exercise 14 Spelling Test Exercise 68 Spelling Test Exercise 69 Parallel Structure Exercise 5 Confused Words Exercise 58 Apostrophes Exercise 5 Confused Words Exercise 59 Redundancy Exercise 7 Capitalization Exercise 8 Spelling Test Exercise 70 Em Dashes Exercise 2 Misplaced Modifiers Exercise 3 Run-on Sentences Exercise Academic Terms Exercise Confused Words Exercise 60 Compound Words Exercise 2 Confused Words Exercise 61 Punctuation Exercise 22 Spelling Test Exercise 71 Quotations Exercise 2 Confused Words Exercise 90 Hyphenation Exercise 6 Confused Words Exercise 89 Restrictive and Nonrestrictive Clauses Exercise 5 Confused Words Exercise 92 Confused Words Exercise 91 Subject-Verb Agreement Exercise 7 Confused Words Exercise 93 Awkward Phrasing Exercise 2 Punctuation Exercise 23 Spelling Test Exercise 72 Confused Words Exercise 62 Confused Words Exercise 94 Redundancy Exercise 8 Confused Words Exercise 97 Confused Words Exercise 96 Parallel Structure Exercise 6 Confused Words Exercise 95 Spelling Test Exercise 73 Abbreviations Exercise Confused Words Exercise 63 Punctuation Exercise 24 Compound Words Exercise 9 Usage Exercise 2 Articles Exercise Confused Words Exercise 73 Punctuation Exercise 31 Spelling Test Exercise 81 Compound Words Exercise 10 Parallel Structure Exercise 7 Parallel Structure Exercise 13 Redundancy Exercise 11 Compound Words Exercise 3 Hyphens Exercise 7 Spelling Test Exercise 74 Coordinate and Noncoordinate Adjectives Exercise 4 Capitalization Exercise 9 Coordinate and Noncoordinate Adjectives Exercise 3 Confused Words Exercise 64 Dangling Participles Exercise 2 Punctuation Exercise 32 Apostrophes Exercise 6 Verb Errors Exercise 2 Punctuation Exercise 58 Apposition Exercise Spelling Test Exercise 82 Compound Words Exercise 11 Noun Plurals Exercise Spelling Test Exercise 83 Conciseness Exercise 4 Phrasal Adjectives Exercise 4 Spelling Test Exercise 53 Assorted Grammatical Problems Exercise 20 Parallel Structure Exercise 1 Punctuation Exercise 33 Confused Words Exercise 47 Prepositional Phrases Exercise Misplaced Modifiers Exercise 2 Pronouns Exercise 10 Punctuation Exercise 15 Spelling Test Exercise 54 Verbs Exercise 7 Confused Words Exercise 28 Idiomatic Phrases Exercise 3 Spelling Test Exercise 75 Misplaced Modifiers Exercise 4 Hyphenation Exercise 7 Confused Words Exercise 65 Comma Splice Exercise 2 Comparison of Adjectives Exercise Spelling Test Exercise 92 Direct Object or Predicate Complement Exercise Punctuation Exercise 60 Modifying Phrases Exercise Spelling Test Exercise 31 Confused Words Exercise 66 Hyphens Exercise 3 Redundancy Exercise 9 British and American Spelling Exercise Apposition and Description Exercise Hyphens Exercise 4 Auto-antonyms Exercise Compound Words Exercise 4 Confused Words Exercise 67 Compound Words Exercise 5 Pronouns Exercise 15 Word Choice Exercise 2 Spelling Test Exercise 76 Modifiers Exercise Confused Words Exercise 68 Spelling Test Exercise 32 Punctuation Exercise 25 Hyphens Exercise 5 Confused Words Exercise 29 Word Formation Exercise Conciseness Exercise 5 Quotation Marks Exercise 4 Compound Words Exercise 12 English Idioms Exercise Spelling Test Exercise 33 Punctuation Exercise 3 Punctuation Exercise 16 Preposition Choice Exercise Commas Exercise 5 Perfect Tenses Exercise Confused Words Exercise 30 Confused Words Exercise 48 Diction Exercise 13 Less and Fewer Exercise Verbs Exercise 8 Confused Words Exercise 49 Spelling Test Exercise 55 Hyphens Exercise 8 Clauses Exercise 3 Punctuation Exercise 34 Pronouns Exercise 11 Punctuation Exercise 17 Misplaced Modifiers Exercise 5 Verbs Exercise 9 Diction Exercise 14 Punctuation Exercise 18 Parallel Structure Exercise 14 Spelling Test Exercise 56 Diction Exercise 15 Pronouns Exercise 12 Compound Words Exercise 13 Compound Words Exercise 17 Compound Words Exercise 16 Compound Words Exercise 15 Compound Words Exercise 14 Compound Words Exercise 20 Compound Words Exercise 19 Compound Words Exercise 18 Parallel Structure Exercise 8 Confused Words Exercise 31 Hyphens Exercise 9 Confused Words Exercise 69 Punctuation Exercise 26 Spelling Test Exercise 77 Parallel Structure Exercise 9 Compound Words Exercise 6 Punctuating Modifying Phrases Exercise Hyphens Exercise 11 Hyphens Exercise 10 Apostrophe Use Exercise Synonyms Exercise 2 Hyphens Exercise 12 Spelling Test Exercise 78 Hyphens Exercise 13 Hyphens Exercise 14 Punctuation Exercise 27 Spelling Test Exercise 34 Hyphens Exercise 15 Confused Words Exercise 32 Redundancy Exercise 10 Hyphens Exercise 17 Confused Words Exercise 70 Hyphens Exercise 16 Hyphens Exercise 18 Parallel Structure Exercise 10 Verbs Exercise 10 Confused Words Exercise 50 Compound Words Exercise 7 Assorted Grammatical Problems Exercise 2 Spelling Test Exercise 57 Pronouns Exercise 13 Punctuation Exercise 19 Punctuation Exercise 35 Diction Exercise 16 Homophones Exercise Punctuation Exercise 4 Confused Words Exercise 51 Spelling Test Exercise 58 Verbs Exercise 11 Parallel Structure Exercise 15 Conjunctive Adverbs Exercise Subject-Verb Agreement Exercise 5 Punctuation Exercise 20 Hyphenation Exercise 3 Confused Words Exercise 52 Spelling Test Exercise 59 Diction Exercise 17 Parallel Structure Exercise 2 Dangling Participles Exercise 4 Restrictive and Nonrestrictive Clauses Exercise 4 Confused Words Exercise 53 Spelling Test Exercise 60 Diction Exercise 5 Proverbs and Idioms Exercise Redundancy Exercise 4 Confused Words Exercise 33 Spelling Test Exercise 35 Indirect Objects Exercise Possessive Agreement Exercise Prepositions Exercise 3 Restrictive Punctuation Exercise Spelling Test Exercise 36 Confused Words Exercise 54 Synonyms Exercise 3 Spelling Test Exercise 61 Parallel Structure Exercise 3 Punctuation Exercise 5 Capitalization Exercise 6 Parallel Construction Exercise 4 Pronoun Usage Exercise Spelling Test Exercise 62 Verbs Exercise 2 Diction Exercise 6 Spelling Test Exercise 37 Wordiness Exercise 2 Adjective or Adverb? Exercise 2 Twisted Expressions Exercise Punctuation Exercise 6 Scare Quotes Exercise 1 Commas Exercise 6 Confused Words Exercise 34 Spelling Test Exercise 38 Pronouns Exercise 6 Parallel Structure Exercise 21 Word Choice Exercise 3 Hyphens Exercise 19 Confused Words Exercise 35 Confused Words Exercise 55 Irregular Verbs Exercise 4 Spelling Test Exercise 39 Punctuation with Quotation Marks Exercise Punctuation Exercise 7 Compound Words Exercise 21 Hyphens Exercise 20 Idioms Exercise 4 Subject-Verb Agreement Exercise 6 Past Participle Exercise 2 Diction Exercise 7 Spelling Test Exercise 40 Punctuation Exercise 8 Assorted Grammatical Problems Exercise 7 Connotation Exercise Parallel Structure Exercise 22 Pleonasms Exercise Verb Tense Exercise 7 Confused Words Exercise 36 Punctuation Exercise 36 Spelling Test Exercise 41 Present Participle Exercise 3 Confused Words Exercise 37 Redundancy Exercise 12 Punctuation Exercise 9 Verbs Exercise 3 Confused Words Exercise 74 Restrictive and Nonrestrictive Clauses Exercise 6 Parallel Structure Exercise 16 Present Participle Exercise 2 Confused Words Exercise 76 Prepositions Exercise 4 Confused Words Exercise 75 Confused Words Exercise 77 Verbs Exercise 4 Spelling Test Exercise 42 Confused Words Exercise 78 Pronouns and Possessive Adjectives Exercise Punctuation Exercise 46 Idioms Exercise 2 Compound Words Exercise 22 Capitalization Exercise 17 Confused Words Exercise 38 Assorted Grammatical Problems Exercise 8 Confused Words Exercise 99 Redundancy Exercise 15 Spelling Test Exercise 43 Confused Words Exercise 82 Confused Words Exercise 81 Confused Words Exercise 80 Confused Words Exercise 79 Assorted Grammatical Problems Exercise 3 Punctuation Exercise 37 Redundancy Exercise 13 Parallel Structure Exercise 17 Scare Quotes Exercise 5 Compound Words Exercise 23 Parallel Structure Exercise 23 Redundancy Exercise 14 Compound Words Exercise 24 Extraneous Words Exercise 2 Assorted Grammatical Problems Exercise 9 Hyphens Exercise 21 Compound Words Exercise 25 Assorted Grammatical Problems Exercise 10 Redundancy Exercise 16 Parallel Structure Exercise 24 Punctuation Exercise 48 Hyphens Exercise 22 Extraneous Words Exercise 3 Compound Words Exercise 27 Scare Quotes Exercise 6 Hyphens Exercise 23 Compound Words Exercise 26 Assorted Sentence-Structure Problems Exercise Assorted Grammatical Problems Exercise 11 Redundancy Exercise 17 Parallel Structure Exercise 25 Assorted Grammatical Problems Exercise 12 Hyphens Exercise 24 Compound Words Exercise 28 Hyphens Exercise 25 Quotations Exercise 4 Punctuation Exercise 38 Compound Words Exercise 29 Dangling Participles Exercise 8 Restrictive and Nonrestrictive Clauses Exercise 7 Punctuation Exercise 50 Assorted Grammatical Problems Exercise 4 Assorted Grammatical Problems Exercise 13 Scare Quotes Exercise 7 Assorted Grammatical Problems Exercise 14 Compound Words Exercise 30 Hyphens Exercise 26 Compound Words Exercise 31 Parallel Structure Exercise 26 Punctuation Exercise 51 Scare Quotes Exercise 2 Assorted Grammatical Problems Exercise 15 Job Descriptions Exercise Dangling Participles Exercise 6 Punctuation Exercise 40 Assorted Grammatical Problems Exercise 5 Punctuation Exercise 39 Usage Exercise 3 Punctuation Exercise 52 Assorted Grammatical Problems Exercise 16 Compound Words Exercise 32 Parallel Structure Exercise 27 Capitalization Exercise 11 Compound Words Exercise 33 Hyphens Exercise 27 Parallel Structure Exercise 28 Compound Words Exercise 34 Assorted Grammatical Problems Exercise 17 Punctuation Exercise 53 Extraneous Words Exercise 4 Tense Exercise 2 Compound Words Exercise 35 Hyphens Exercise 28 Scare Quotes Exercise 8 Scare Quotes Exercise 4 Punctuation Exercise 54 Compound Words Exercise 36 Assorted Grammatical Problems Exercise 18 Numbers Exercise 3 Combining Sentences Exercise 2 Punctuation Exercise 41 Capitalization Exercise 12 Compound Words Exercise 37 Usage Exercise 4 Misplaced Modifiers Exercise 6 Apostrophes Exercise 7 Parallel Structure Exercise 18 Punctuation Exercise 42 Dangling Participles Exercise 7 Punctuation Exercise 44 Parallel Structure Exercise 19 Punctuation Exercise 43 Numbers Exercise 4 Hyphens Exercise 29 Scare Quotes Exercise 3 Punctuation Exercise 45 Punctuation Exercise 55 Assorted Grammatical Problems Exercise 6 Quotations Exercise 3 Assorted Grammatical Problems Exercise 19 Parallel Structure Exercise 20 Compound Words Exercise 38 Numbers Exercise 2 Punctuation Exercise 57 Compound Words Exercise 39 Parallel Structure Exercise 29 Punctuation Exercise 56 Hyphens Exercise 30 It’s all about “that” exercise Past Participle Exercise Weak-Period Semicolons Exercise Parallel Structure Exercise 30 Compound Words Exercise 40 Bullet Exercise Dash Usage Exercise Tense Exercise 2 Tense Exercise Possessives Exercise 2 Correlative Conjunction Exercise Conditionals Exercise Idioms With “Break” Exercise Computer Terms Exercise Parallel Structure Exercise Possessives Exercise Phrasal Adjectives Exercise Dangling Participles Exercise Simile And Metaphor Exercise Masters Or Master’s Exercise Despite/In Spite Of Exercise Parallel Run-In Lists Exercise Misplaced Modifiers Exercise Smothered Verbs Exercise Ellipsis Exercise Parallel Sentence Structure Exercise Loose vs. Lose Exercise Phrasal Adjectives Exercise 5 Parallel Run-In Lists Exercise 3 Quiet vs. Quite Exercise Me, Myself and I Exercise Prepositions Exercise Confused Words Exercise Continual vs. Continuous Exercise All About Rat Exercise Among vs. Between Exercise Coordinate and Noncoordinate Adjectives Exercise Redundancy Exercise Hyphens Exercise Dangling Modifiers Exercise Compound Nouns Exercise Pronouns Exercise Verb Errors Exercise Capitalization Exercise Personal Pronouns Exercise Apostrophes Exercise Idiomatic Expressions Exercise Spelling Test Exercise Diction Exercise Parallel Construction Exercise Hyphenation Exercise Irregular Verbs Exercise Verb Tense Exercise If Clauses Exercise Simplifying Sentences Exercise Restrictive and Nonrestrictive Clauses Exercise Attaching Prefixes to Words Exercise Conciseness Exercise Idioms Exercise Clauses Exercise Present Participle Exercise Negative Prefixes Exercise Quotation Marks Exercise Phrasal Verbs Exercise Commas Exercise Tense Exercise Combining Sentences Exercise Idiomatic Phrases Exercise Verbs Exercise Pronoun Agreement Exercise Word Choice Exercise Verbs in If Clauses Exercise Spelling Test Exercise 44 Prefixes Exercise Numbers Exercise Awkward Phrasing Exercise Usage Exercise Comma Splice Exercise Compound Words Exercise Punctuation Exercise Extraneous Words Exercise Assorted Grammatical Problems Exercise Negative Prefixes Exercise Problems with Parenthetical Phrases Exercise Simplifying Sentences Exercise