Punctuation & Style Practice

詳解：Option A correctly places a comma after the introductory clause 'After the rain stopped'. Option B omits the necessary comma. Option C inserts an unnecessary comma after 'After'. Option D incorrectly places a comma before 'for a walk'.

詳解：Option C correctly uses a colon to introduce a list. A semicolon (option A) is used to join independent clauses, not to introduce a list. Option B incorrectly uses semicolons between list items. Option D is a simple list without a colon, which is acceptable but not as formal as C.

詳解：Option B correctly uses 'dog's' to show possession by one dog. Option A omits the apostrophe. Option C 'dogs'' implies multiple dogs, but the context suggests one dog. Option D is grammatically incorrect as it lacks possessive form.

詳解：Option B correctly uses double quotation marks with the comma inside the quotes. Option A uses single quotes, which is acceptable in British English but less common. Option C has the period inside the quotes, which is correct in American English, but in British English the period is often outside. Option D incorrectly places the period outside the quotation marks.

詳解：Option A is a comma splice: two independent clauses joined only by a comma. Option B correctly uses a semicolon. Option C correctly uses a comma and coordinating conjunction. Option D correctly uses a subordinating conjunction.

詳解：Option B correctly uses a colon after an independent clause to introduce an explanation or list. Options A, C, and D incorrectly use colons after incomplete sentences (the phrases before the colon are not independent clauses).

詳解：Option B is active voice and more direct than passive voice (A). Option C is passive and omits the agent. Option D is grammatically incorrect and awkward.

詳解：Option B uses consistent gerund forms (swimming, running, biking) for parallel structure. The other options mix gerunds and infinitives, breaking parallelism.

詳解：Option B correctly uses a hyphen to form the compound adjective 'well-known' before the noun 'author'. Option A lacks the hyphen. Options C and D incorrectly hyphenate 'known-author' or 'well-known-author'.

詳解：Option A correctly places the question mark inside the quotation marks and uses a comma after 'asked'. Option B omits the comma. Option C incorrectly places the question mark outside. Option D omits the comma and places the question mark outside.