I would have gone to the concert, but I ________ no time.

A. have　　　　　B. had had　　　 C. had　　　　　 D. have had

I would appreciate ________ you can offer me some advice．

A. if　　　　　　B. when　　　　　C. that　　　　　D. until

Scientists have so far failed to find a cure ________ AIDS.

A. for　　　　　 B. against　　　　C. to　　　　　　 D. of

There is no doubt ________ the final English exam will not be difficult.

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

I asked him ________ English is her favorite subject.

A. that　　　　　 B. that whether　 C. which　　　　 D. whether

—Did John ask you to play tennis this Saturday?

—Yes, but I wish it ________ raining before tomorrow.

　　A. stops　　　　　B. stopped　　　 C. will stop　　　 D. would stop

—Why is the university doing so much building?

— ________ number of students ________ so rapidly.

　　A. The; have increased　　　　　　　B. A; have increased

　　C. The; has increased　　　　　　　 D. A; has increased

China opened its door to the outside world in 1978. ________ that had far-reaching effects.

　　A. Did a new development come then　 B. Came then a new development

　　C. Then came a new development　　 D. Then did a new development come

The last half of the nineteenth century ________ the steady improvement in the means of travel.

　　A. has witnessed　　　　　　　　　 B. was witnessed

　　C. witnessed　　　　　　　　　　　D. is witnessed

If I ________ your advice, I ________ so much trouble.

　　A. had taken; would not have met　　 B. took; would not have met

　　C. have taken; would not meet　　　　D. take; will not have met