[2001上海] He' s got himself into a dangerous situation ________ he is likely to lose control over the plane.

A. where  B. which  C. while  D. why

[2001上海] Information has been put forward ________ more middle school graduates will be admitted into universities.

A. while  B. that  C. when  D. as

[2000上海] ________ 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

[2000上海] Someone is ringing the doorbell. Go and see ________ .

A. who is he　　　　　　　　　　    B. who he is　　 

C. who is it　　　　　　　　　　    D. who it is

[1998上海] He was very rude to the customs officer, ________ of course made things even worse.

A. who  B. whom  C. what  D. which

[1998上海] I had neither a raincoat nor an umbrella. ________ I got wet through.

A. It's the reason　　　　　　　　　　    B. That's why   

C. There's why　　　　　　　　　　    D. It's how

[1998上海] ________ caused the accident is still a complete mystery.

A. What  B. That  C. How  D. Where

[1998上海] He made another wonderful discovery, ________ of great importance to science.

A. which I think is  B. which I think it is

C. which I think it  D. I think which is

________ you have seen both fighters, ________ will win?

A. Since; do you think who　　　　　　　　　　    B. As; who you think

C. When; whoever　　　　　　　　　　    D. Since; who do you think

In the office I never seem to have time until after 5:30 pm, ________ many people have gone home.

A. whose time　　　　　　　　　　    B. that　　　　　　　　　　    C. on which　　　　　　　　　　    D. by which time