A.is drying B.will dry C.dried D.has dried

12.He went away and he back yet.

A.is not B.has not been C.was not D.will not be

13.The world’s supplies of petroleum.

A.have been gradually exhausted

B.have gradually exhausted

C.are being gradually exhausted

D.are gradually exhausted

14.We your terms carefully but to say that we cannot accept them.

A.are studying;regret B.have studied;are regretting

C.have studied;regret D.have been studying;will regret

15.With the development of production and science,electronics a wide application in

A.has found B.finds C.have found D.found

16.The company a rise in salary for ages,but nothing has happened yet.

A.has been promised B.has been promising C.is promising D.promised

17.The children many times not to go near the stove.

A.have told B.told C.have been told D.are told

18.The experiment is very expensive.But succeed,we would be able to make production more efficient.

A.should we B.were we C.if should we D.if we

19.if you had lost your watch?

A.Hadn’t you been upset B.Wouldn’t you be upset

C.Weren’t you upset D.Wouldn’t you have upset

20.I wished it but it did.

A.not occurred B.did not occur C.had not occurred D.would not occur

21.If I had only read all the books before I the lecture!

A.attended B.would have attended C.had attended D.have attended

22.The swimmer was very tired but he reach the shore before he collapsed.

A.managed B.could C.was succeeded to D.was able to

23.as much as one-fourth of all timber harvested is not used proved to be false.

A.The estimate B The estimate that C.They are estimated D.It is estimated that

24.The lawyer told his client that.

A.the case was of a small chance to win

B.it was nearly impossible to win him the case

C.they had little chance of winning the case

D.the chance of their winning the case was little

25.that men try to do the same things as nature does,and they usually have to do them in a different way.

A.The fact is so interesting

B.It is an interesting fact

C.The fact has much interest

D.There is a fact so interesting