QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: This drug must first be tested on oneself.

QUES: unacceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: He can can go

QUES: unacceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: She thought it was likely that everyone to fit into the car.

QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS:
Carol cut the bread with a knife.