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

　　A. discovered

　　B. Found

　　C. developed

　　D. invented

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

　　A. taken

　　B. left

　　C. missed

　　D. got

　　3. I regret ____________ 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 ____________a few minutes late after the meeting begins.

　　A. has arrived

　　C. could arrive

　　B. should arrive

　　D. may arrive

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

　　A. such

　　B. tha

　　t C. so

　　D. as

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

　　A. expect

　　B. believe

　　C. think

　　D. instruct

　　7. Is ____________ 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 ____________ four or five years.

　　A. another

　　B. others

　　C. other

　　D. the others

　　9. Mr. Smith used to smoke ____________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 ____________.

　　A. was rebuilding

　　C. would be rebuilt

　　B. was being rebuilt

　　D. had been rebuilt

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