8. It isn't cold enough for there _____ a frost tonight, so I can leave Jim's car out quite safely.

A. would be　 B. being　　 C. was　　 D. to be

7. No bread eaten by man is so sweet as _____ earned by his own labour.

A. one　　 B. that　　 C. such　　 D. what

6. The millions of calculations(计算) involved, had they been don't by hand, _____ all practical value by the time they were finished.

A. could lose　　 B. would have lost　　 C. might lose　　 D. ought to have lost

5. _____ the fact that his initial(开始的)experiments had failed, Pro. White persisted (坚持) in his research.

A. Because of　　　 B. As to　　　 C. In spite of　　 D. In views of

4. The heart is ____ intelligent than the stomach, for they are both controlled by the brain.

A. not so　　 B. not much　　 C. much more　　 d. no more

3. Living in the central Australian desert has its problems, _____ obtaining water is not the least.

A. of which　　 B. for what　　 C. as　　 D. whose

2. I appreciated ____ the opportunity to study abroad two years ago.

A. having been given　　 B. having given　　 C. to have been given　 D. to have given

1. By the time you arrive in London, we _____ in Europe for two weeks.

A. shall stay　　　 B. have stayed　　　 C. will have stayed　　　 D. have been staying

45.＿＿when we passed by its nest.

A.Up into the blue sky did the bird fly

B.Up into the blue sky the bird flew

C.Up into the blue sky flew the bird

D.Flew up into the blue sky the bird

44.Since everyone has come back here,＿＿＿.

A.on goes our discussion

B.goes on our discussion

C.on does our discussion go

D.does on our discussion go