1 . Only one of these books is _______.

A．worth to read	B．worth being read
C．worth of reading	D．worth reading

2 . We had just begun to work________ the machine broke down.

A．when

B．as

C．while

D．after

3 . It _________ (发生)to him that he had left the bag on the train.

4 . It suddenly occurred to him ________ he had left his keys in the office.

A．whether	B．where
C．which	D．that

5 . 单句改错
1. The number of the students in the class are sixty.
2. Hear the bad news, she didn’t know what to do.
3. He would rather to keep time for his hobbies.
4. It is no use argue with him about such a matter.
5. Therefore, he was determined to rid people hunger.
6. Read aloud is a good way to learn a language.
7. Suddenly, the girl quieted down and began looking around curious
8. With so many people looked at her, she felt nervous.
9. Tom, together with his friends, have gone out to play.
10. They focus on keep their soil rich and free of disease,
11. Not Jack but his parents is to blame for the home accident.
12. We don’t allow smoke in the office.
13. It hit to me how difficult it was for a woman to get medical training at that time.
14. It was in the park which I met the foreigner.
15. The production costs have been reduced to 30％.

6 . Ten years ago the population of our village was_________ that of theirs.

A．as twice large as	B．twice as large as
C．twice as much as	D．as twice much as

7 . Come and see me whenever ________.

A．you are convenient	B．you will be convenient
C．it is convenient to you	D．it will be convenient to you

8 . Tom was about to close the window　　　　his attention was caught by a bird.

A．when	B．if
C．and	D．till

9 . In any unsafe situation, simply ________ the button and a highly-trained agent will get you the help you need.

A．press	B．to press
C．pressing	D．pressed

10 . I ________down to London when I suddenly found that I was on the wrong road.

A．was driving	B．have driven
C．would drive	D．drove