50. These wild flowers are so special I would do __ I can to save them.

　 A. whatever　　　 B. that　　　 C. which　　 D. whichever

49. _____ is no possibility ___ Bob can win the first prize in the match.

　 A. There; that　 B. It; that C. There; whether　 D. It; whether

48. What the doctors really doubt is _____ my mother will recover from the serious disease soon.

　 A. when　　　 B. how　　　 C. whether　　 D. why

47. ______ the 20078 Olympic Games will be held in Beijing is not known yet.

　 A. That　　 B If　　 C. Whether　　 D. Whenever

46. _____ you don’t like him is none of my business.

　 A. What　　　 B. Who　　 C. That　　 D. Whether.

45. Little Tommy was reluctant to tell the schoolmaster _____ he had done the day before.

　 A. that　　　 B. how　　 C. where　　 D. what

44. _____ she couldn’t understand was _____ fewer and fewer students showed interest in her lessons.

　 A. What; why B. That; what C. What; because D. Why; that

43. Can you make sure _____ the gold ring?

　 A. where Alice had put　　　 B. where had Alice put

　 C. where Alice has put　　　　 D. where has Alice put

42. Someone is ringing the doorbell. Go and see _____.

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

41. He asked ____ for the violin.

　 A. did I pay how much　　 B. I paid how much

　 C. how much did I pay　　 D. how much I paid