QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: I've never seen a man who is taller than my mother.

QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: I'd planned to have finished by now.

QUES: unacceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: Which girl did he give my binoculars?

QUES: unacceptable (OPTIONS:
- unacceptable
- acceptable)
ANS:
Is whether he played the piano known?