16Hit 1600
Standard English ConventionsEasy–MediumComma with coordinating conjunction

Standard English Conventions practice question

The theater's original blueprints were lost when the archive ceiling ____ the copies stored across town survived to guide the restoration.

Which choice completes the text so that it conforms to the conventions of Standard English?

  1. A. collapsed, butCorrect
  2. B. collapsed but,
  3. C. collapsed, but,
  4. D. collapsed but

Answer: A. collapsed, but

Two complete sentences joined by 'but' take a comma before the conjunction: '…collapsed, but the archive copies survived…'

Why the other answers are wrong

B. collapsed but,
The comma belongs before 'but,' never directly after it.
C. collapsed, but,
No comma follows the conjunction.
D. collapsed but
Joining two complete sentences with 'but' and no comma leaves the boundary unmarked.

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