10. I thought Mr Smith has been 　　　　to get back to work.

A. so well　　　　　　　　　 B. so good

C. well enough　　　　　　　 D. good enough

9. Jumping out of 　　　　airplane at ten thousand feet is quite 　　　　exciting experience.

　A. /; the　　　　　　　　　 B. /; an

C. an; an　　　　　　　　　 D. the; the

8. Mr Smith was 　　　flight to New York 　　　he remembered he had taken all the family’s keys to the doors with him.

A. at; while　　　　　　　　 B. on; when

C. at a; when 　　　　　　　D. on a; when　

7. Mr Green thinks that,　　　 　the situation would have got worse.

A. if not dealing with carefully

B. if having nor dealt with

C. if not having been dealt with carefully

D. if having not been dealt with carefully

6. Though the girl 　　　to learn Japanese, she couldn’t catch up with her classmates. A. made effort　 　　　　　　　B. made all her efforts

C. took every effort 　　　　D. gave her efforts

5. Always acting in a strange manner, Einstein must have 　　　to people around to be mad.

A. appeared　　　 B. showed　　 C. thought　　　 D. imagined

4. Dark glasses are sometimes worn to 　　　the eyes from strong sunlight.

A. prevent　　　 B. care　　　 C. defend　　　　 D. protect

3.　　　 　the problem may be, we must solve it ourselves.

A. Whatever difficult　　　　 B. How difficult

C. However difficult　　　　　 D. No matter what difficult

2. Charles Babbage is generally considered　 　　　the first computer.

A. to invent　　　　　　　　　 B. inventing

C. to have invented　　　　　 D. having invented