Question

Which sentence uses a verb that agrees with its subject?

A.
The retiring members of the chorus are Mr. Dansdill and Mrs. Donnery.


B.
A box of chocolates were left on May's doorstep.


C.
Posters about safety hangs in every office in Town Hall.


D.
The music for this week's concert are on the table.

Answer 1

A is the answer for this question. Honestly, read the questions out loud and listen to the way they sound. You'll be able to figure out which ones use bad grammar and which is correctly written. 

Answer 2

"The retiring members of the chorus are Mr. Dansdill and Mrs. Donnery" is the only sentence that uses a verb that agrees with its subject. The other have issues with case and number.