Question

None of the boys have finished the homework,..............?

• A. have they ?
• B. haven't they ?
• C. did they ?
• D. didn't they ?

Answer 1

Answer:

A. have they ?

• "None of the boys have finished" is a negative idea (similar to "not one").

• The tag should match the auxiliary verb "have" and be positive because the main clause is negative.

• So, we use: "have they?"