QUES: unacceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: I saw Mary and downtown yesterday your friend from Boston.

QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: Could they have left?

QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS: has no relative pronoun at all.

QUES: acceptable (OPTIONS:
- unacceptable
- acceptable)
ANS:
Rub the baby with the cloth torn.