Language & Literature

Copyediting Test: Catch Errors and Polish Your Writing

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This copyediting test helps you spot grammar, style, and punctuation issues fast. Get instant answers, brief explanations, and see where to tighten your edits. Want more practice? Try our proofreading test, check your style choices with the AP style quiz, or sharpen punctuation in the comma rules quiz.

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1Choose the correctly punctuated series using the Oxford (serial) comma.
2Choose the correct pronoun: She is the colleague to ____ I sent the draft.
3Choose the correctly hyphenated compound modifier before the noun.
4US style punctuation with quotation marks: Choose the correctly punctuated sentence.
5Choose the correct word with a count noun: There are ____ chairs available.
6Choose the correct form: The company increased ____ revenue this quarter.
7Choose the correct use of a semicolon to join independent clauses.
8In American English, choose the correct subject-verb agreement with a collective noun.
9Choose the sentence free of a dangling modifier.
10Choose the correct punctuation for a numeric range in Chicago style body text.
11Choose the correct usage: The policy will ____ most employees but only ____ a few procedures.
12Choose the correctly punctuated nonrestrictive clause.
13Choose the correct colon usage after an independent clause.
14Chicago title case: Choose the correctly capitalized book title.
15AP style: Choose the correct styling for the web infrastructure term.
16In Chicago style, an ellipsis consists of three spaced periods, with spaces between the dots.
17After a colon in a sentence, lowercase the first word unless it begins a complete sentence or a proper noun (Chicago).
18Choose the correct usage of comprise/compose.
19Choose the correct plural form: more than one attorney general.
20Choose the correct lay/lie usage.
Learning Goals

Study Outcomes

  1. Identify Common Errors in Text -

    Recognize spelling, grammar, and punctuation mistakes that often appear in editing tests for editors to boost your accuracy.

  2. Apply Style Guide Principles -

    Use industry-standard style rules to ensure consistency and clarity during any copy editing test or editorial test.

  3. Refine Sentence Structure -

    Adjust phrasing, tone, and flow to enhance readability and engage readers effectively in both web and print content.

  4. Analyze Copy for Consistency -

    Detect and correct inconsistencies in terminology, formatting, and style across different sections of your work.

  5. Evaluate Your Editorial Skills -

    Assess strengths and weaknesses through immediate feedback, helping you prepare for a real-world editing exam.

  6. Hone Speed and Accuracy -

    Develop strategies for quick, precise edits under time constraints to excel in high-pressure copy editing tests.

Study Guide

Cheat Sheet

  1. Subject-Verb Agreement -

    Ensuring the subject and verb match in number is crucial for a top score on your editing test; common pitfalls arise when intervening phrases obscure the true subject. Purdue OWL recommends isolating the core subject - verb pair (e.g., "The bouquet of roses smells fragrant," not "smell"). A quick trick: remove extra words to confirm singular or plural agreement.

  2. Serial Comma Consistency -

    Whether you're tackling a copy editing test or an editing exam, consistent use of the Oxford (serial) comma prevents ambiguity in lists. The Chicago Manual of Style endorses the serial comma - "apples, oranges, and bananas" - while AP Style omits it unless needed. Remember the mnemonic "two items need no comma, three or more always do."

  3. Style-Guide Conventions -

    Familiarity with major style guides (e.g., AP, Chicago, MLA) helps you adapt to any editorial test quickly; each has rules on numbers, capitalization, and punctuation. For instance, AP spells out numbers under 10, while Chicago often uses numerals for 10 and above. Keep a quick-reference sheet during practice quizzes to internalize these differences.

  4. Homophones and Common Confusables -

    Spotting errors like "their/there/they're" or "affect/effect" is a staple in editing tests for editors; misused homophones can undermine credibility. The University of Oxford's Style Guide offers clear definitions and example sentences to reinforce correct usage. Practice with targeted exercises to build instinctive recognition under time pressure.

  5. Fact-Checking & Reference Verification -

    Accurate sourcing and citation are essential in a rigorous editorial test; errors in names, dates, or data can slip past cursory reviews. Use the Council of Science Editors' checklist to confirm facts before finalizing edits. A reliable habit: cross-verify each fact against at least two reputable sources.

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Michael HodgeEdTech Product Lead & Assessment Design SpecialistQuiz Maker
Updated Feb 19, 2026