16Hit1600
Standard English ConventionsHardCommas around an appositive describing two bridges

Standard English Conventions practice question

The two ____ were built a century apart.

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

  1. A. bridges, one of stone and one of steel,Correct
  2. B. bridges, one of stone and one of steel
  3. C. bridges one of stone and one of steel,
  4. D. bridges; one of stone and one of steel,

Answer: A. bridges, one of stone and one of steel,

The appositive phrase is set off by a pair of commas.

Why the other answers are wrong

B. bridges, one of stone and one of steel
The second comma is missing.
C. bridges one of stone and one of steel,
The first comma is missing.
D. bridges; one of stone and one of steel,
A semicolon cannot open an appositive.

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