1. It is well known that Tomas Edison ______D____ the electric lamp.

　　A. discovered

　　B. Found

　　C. developed

　　D. invented

　　2. I couldn’t enter the lab because I had ______B______ the key in my office.

　　A. taken B. left

　　C. missed D. got

　　3. I regret ______C______ you that we are unable to offer you employment.

　　A. informing

　　C. to inform

　　B. having informed

　　D. to have informed

　　4. The chairman has informed us that he ______D______a few minutes late after the meeting begins.

　　A. has arrived

　　C. could arrive

　　B. should arrive

　　D. may arrive

　　5. She had made _____C_____many mistakes in the article that we couldn’t catch what she meant.

　　A. such B. that

　　C. so D. as

　　6. I sincerely _____A_______him to make great progress with his new job in a short tine.

　　A. expect B. believe

　　C. think D. instruct

　　7. Is _________C___ necessary to complete the design before National Day?

　　A. this B. that

　　C. it D. such

　　8. She said she would live in London for _______A_____ four or five years.

　　A. another B. others

　　C. other D. the others

　　9. Mr. Smith used to smoke ____C________but he has given it up now.

　　A. badly B. seriously

　　C. heavily D. hardly

　　10. Thousands of people took part in when the old temple ______B______.

　　A. was rebuilding

　　C. would be rebuilt

　　B. was being rebuilt

　　D. had been rebuilt

　　11. __C__ with each other, two systems can work better.

　　A) When combine

　　C) When combined

　　B) When combining

　　D) When they combined

　　12. It's important that everyone __D__ here on time.

　　A) is B) will be

　　) must be D) be

　　13. The stormy weather gradually gave __B___ to a period of sunshine.

　　A) room B) way

　　C) space D) place

　　14. I could not do anything except just __B___ for him to come round.

　　A) waiting B) to wait

　　C) waited D) wait

　　15. I can't ___C__ the sight of that poor man.

　　A) suffer B) endure

　　C) bear D) put up

　　16. Wang Ming __C__ ill. I saw him playing basketball a moment ago.

　　A) needn't have been

　　C) couldn't have been

　　B) must have been

　　D) can't be

　　17. _A___ that her son had fallen from a tree and broken his leg, she hurried back home.

　　A) Having been told

　　C) Having told

　　B) Telling

　　D) To be told

　　18. At present _A___ than doing well in our socialist economic construction.

　　A) nothing is more important

　　C) much is more important

　　B) nothing is less important

　　D) anything is more important

　　19. Give up smoking, _B___ you will have a good health.

　　A) or

　　B)and

　　C) so that

　　D) otherwise

　　20. Taking her doctor's advice, she has now __D__ on smoking.

　　A) cut up B) cut out

　　C) cut off D) cut down