19. Three    five makes eight.  C：added to 
18. Who _____ the girl singing in the next room?  Who ______ these people over there?
  C：is;are 
16. Some scientists believe that earth is unlikely to be the only planet ____ life has developed gradually.  B：where 
14. It was in 1997 ______ Hong Kong returned to our country.  B：that
10. The teacher made no comment except _______ to work harder.  C：to tell him
8. He intended _______ you yesterday, but he failed.  B：to have visited 
5.They made the advice that he _____ the other applicants to a friendly competition. 
  A：challenge 
3.__________ tomorrow, they would have to put off the sports meeting. B：B: Should it rain 
2. If I __________ English hard last year, I would have been able to speak it now. D：D:had studied 
1. If Jack _______ here now, he _________ help us.  A：A:were….. would 
9. Very few animals and plants can _____ heat or cold for a long time.  B：endure 
11. An ambulance (救护车) is waiting in the street. Somebody _____ hurt or killed.
  A：must have been 
7. I would like to propose that all broadcasting in the U.S. ___ prohibited by law.  C：be 
12. You cannot see the patient at the moment; he is now _____ medical treatment. C：under 
  4. The woman _____ crying very helpful to express her sadness. D：considers 
6. The author assures us that it is true, lest anyone _____ his story strange.  D： think 
13. There was a minor problem ______ Jim's car, but he fixed it himself.  C：with 
15. We'll carry out our plan ________ there are lots of difficulties.  D：even though 
17. They did a lot of ________ work but refused to take any extra pay.  D：extra 
20. It is ___ to run into the danger for nothing. A：childish 
16. I have been studying here for four years; by the end of next summer, I ______.
  D： shall have graduated 
11. It's very kind ______ to do us such a favor.  D：of you 
13. If we ______permitted, we would have started our journey two days ago. C：had been 
14. Don't expect _______ abroad this vocation, we may not have enough money. B：to go      19. I remember _____ to help us when we got into trouble.  C：him once offering 
7. It is no use _____ about it, because he will never change his mind.  C：arguing
12. Can you see him ______ now?  C：crossing the road 
15. _____ on a clear day, far from the city crowds, the mountains give him a sense of infinite peace.  D：When one is walking 
6. _______ from the top of the mountain, we can see a very beautiful city.  D：Watching 
8. _________, Dick could not succeed ___________ the driving test.
  A：However hard he tried; in passing 
3.        , he knows a lot of things.    B：Child as he is 
9. Such    the results of the experiments.  C：are 
： 5. Listening to loud music at rock concerts      caused hearing loss in some teenagers. 
    C：has 
  4. Either Jim or his cousins      to American, but      of them knew the country very well.
  A：have been; all 
1. Father and son    standing on the roadside. Beside them    a cart and horse. 
C：were;was 
18. Tom and Jerry wore dark glasses to avoid _______.  D：being recognized 
2. Every man worker and every woman worker _____ free medical care. At Christmas each boy and each girl _____ given a present.  D：enjoys;are
17.      reading and speaking English every day, he would speak it well enough now. 
A：Had he practiced 
  20. What the remote areas need        education to children and what the children need      good textbooks at the moment.  A：is;are
10. Mr. Green with his wife        sitting there when I came in.  B：was 
20. He went to town _______ some shopping.  A：to do 
19. He is said ______ abroad for two years.  B：to have been studying 
18. The teacher made no comment except _______ to work harder. C：to tell him 
17. They are looking for some ______ in the library.  D：interesting books 
16.Young men by the dozen came up, _______.  C：asking her to dance 
15. Fortunately, a sailor saved him _______.  C：from drowning 
  14. Your car urgently required ______.  B：seeing to 
13. They all seemed very ______ when they heard the news.  D：excited 
12. The meeting, ______ over a thousand students, was a great success.  A：attended by 
11. ­­­_______ the speech, the young people made up their minds to take up struggle. 
  A：Encouraged by 
only girl (in the world)