33. ---Shall I tell your parents what happened? 　　　　　　　　　 ---Not _______ they ask you. A. unless　　　　　　　　　　 B. since　　　　　　　 　　　 C. once　　　　　　　　 　　　 D. though

32. I would have told him the answer, but I _________so busy then.

A. would be　　　　 B. was　　　　　 　　　 C.　 would have been　　　　 D. have been

31. He always wears glasses except ________ he is playing football.　　

A. that　 　　　　　　　 　　　 B. when　　　　 　　　　　　　 C. where　　　　　　　 　　　 D. whether

30. The internet connection for the entire area _________ when there was a sudden power cut yesterday.　　

A. lost　　　　　 　　　 B. was lost　　　　　 　　　 C. had lost　　　　　　　　　 D. had been lost

29. The young man, who by then _________ admission to university, decided to do some part-time

jobs to pay for his education．

A. gained　　　　　　 B. was gaining　　　　　 C. had gained　　　　　　 D. has gained

28. Due to a terrible flu that _________ on, many students didn’t show up to school yesterday.

A. goes 　　　 　　　 B. is going 　 　　　 　　　 C. was going　　　 　　 D. has gone

27. He is a man of few words, and seldom speaks until _____ to.

A. spoken　　　　　　 B. speaking　　　　　　　　 C. to speak　　　　　　　　 D. spoke

26. He is always ready to help others, never _________ them when they turn to him.

A. refuse　　　　　　　　　　 B. to refuse　　　　　　　　 C. refusing　　　　　　　　 D. refused

25. Tom does speak Chinese well, but his reading and writing skills leave much _________.

A. to improve　　　 B. to be improved　　　 C. being improved　　 D. having improved

24. The temperature in our city ________ fall to -13℃ in winter.

　 A. shall　　　　　 　　　 B. can　　　　　　　　　 　　　 C. must　　　　　　　　 　　　 D. should