40. I often see Tom _______ homework while I am watching TV every evening.

　　　　 A. do　　　　　　 B. doing　　　　　　 C. did　　　　　　 D. to do

39. It was the third time that I _______ in at his office.

　　　　 A. have dropped　 　B. had dropped　　 C. dropped　　　　 D. was dropping

38. So far I _______ any success. However, I’ll keep trying.

　　　　 A. don’t have　　　 B. didn’t have　　　 C. haven’t had　　 D. won’t have

37. Five years ago nobody knew him, although he _______ more than 100 songs.

　　　　 A. already wrote　　　　　　　　　　　 B. have already written

C. had already written　　　　　　　　 D. was already writing

36. We expected that the English teacher _______ some advice on how to write an English letter.

　　　　 A. will give　　　 　B. gave　　　　　　 C. is going to give　　 D. would give

35. If Mary _______ next Sunday, we will go boating together.

　　　　 A. will come　　　 B. comes　　　　　 C. shall come　　　　 D. should come

34. The letter _______ in French. I can’t read it.

　　　　 A. is writing　　　 B. is written　　　　 C. wrote　　　　　　 D. writes

33. Every spring, many trees _______ along the river.

　　　　 A. were planted　　 B. is planted　　　　 C. will be planted　　 D. are planted

32. Look! The boys _______ happily in the river.

　　　　 A. swim　　　　　 B. swam　　　　　 C. will swim　　　　 D. are swimming

31. –When _______ you _______ your homework?

　　　　 --I had finished it before he _______ back.

　　　　 A. have; finished; came　　　　　　　　 B. have; finished; was coming

C. did; finish; came　　　　　　　　　 D. did; finish; was coming