1、This is the professor 　　　　　　　　　　 　taught me chemistry in 1980 .

50. I like the second football match _______ was held last week.

A. which　　　　 B. who　　　　 C. that　　　　 D. /

49.　 The great day we looked forward to　　　　　　　　　　　　　　　　　　　　　　　　　 at last.

A. come　　　　　　　　　　　　　　　　　　 B. came　　　　　　　　　　　　　　　　　　　　　　 C coming　　　　　　　　　　　　　　　　 D. comes

48.　 The astronaut did many experiments in the spaceship,_________________________ much help

　for knowing space.

A. which we think it is　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 B. which we think are of

C. of which we think is　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. I think which is of

47. They were interested____________________ you told them.

A. in which　　 B. in that　 C. all that　 D. in everything

46.I have many books, some of__________ are on chemistry.

A. them　　　　　　　　　　　　　　　　　　　 B. that　　　　 C. which　　　　 D. those

45. Who can think of a situation___________ this idiom can be used?

A. which　　　　 　 B. that　　　　　　 C. where　　　 D. in that

44. There is only one thing________ I can do.

A. what　　 　　　 B. that　　　　　 　C. all　　　 D. which

43. Do you know which hotel________?

A she is staying　　　　 B. die is staying in　 C. is she staying　　 D. is she staying in

42. The dinner was the most expensive meal we _{______________.}

A. would have　 　　　　 B. have had　　　　 　C had never had　　 　D. had ever had