21. —Look! The telephone is broken. Someone damaged it _____ purpose.
—That may be right. But perhaps it was broken _____ accident.
A. on; on B. on; by C. by; by D. by; on
22. Which was the hotel _____ was recommended to you?
A. that B. which C. where D. it
23. _____ miss the exam, the girl got up earlier this morning.
A. In order to not
B. In order not to
C. So not as to
D. So as not to
