QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: John coughed himself awake on the bank of the lake where he and Bill had their play.

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

QUES: unacceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: We spotted that they were running.

QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS:
There developed a problem.