50. Someone is knocking at the door. Go and see_________

　　 A. who is it　　 　 B. who it is　　　 C. who is he　　　 　　 D. who he is

49. Rubbish mustn't_________ about. We should put it in a dustbin.

　　 A. throw　　　 　　 B. thrown　　　　 　　 C. be throwing　　 　　 D. be thrown

48.--When are they leaving for New York?

　 --They are going to_________ sometime next month.

　　 A. set off　　　　 B. get off　　　　　 　　 C. fall off　　　　 　　　 D. take off

47.--How long has he_________ a member of the football club?　　

--For almost three years.

　　 A. started　　　 　 B. joined　　　　 　 C. become　　　　 　　　 D. been

46. Which of the following is still not an event in the Olympic Games?

45. I'm sorry I'm very busy right now. Please ask_________ else to help you.

　　 A. something　　 　 B. anything　　　 　 C. somebody　　　　 　 D. anybody

44. There are several_________ in your workbook. You should correct them before you go to bed.

　　 A. groups　　　 　 B. erasers　　　 　 C. mistakes　　　 　　　 D. chances

43.--Do you speak French?

　 --Yes, but only_________ .

　　 A. a lot　　　　 　 B. a few　　　　　 　　 C. a piece　　　　 　　 D. a little