( ) 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

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

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

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

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

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

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

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

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

　　( ) 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

　　( ) 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

　　( ) 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

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

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