1 . For second degree burns, keep cloths cool by putting them in a basin of cold water, s________ the water out and placing them on the burned area over and over again for about an hour.

2 . It is hard to imagine a student f_____________ his attention on the textbook while others are playing.

3 . It's impolite to keep _________ (打断) a speaker during a lecture

4 . They don't allow ______ here．That is to say，we are not allowed _____ here．

A．to smoke； to smoke	B．smoking； smoking
C．to smoke； smoking	D．smoking； to smoke

5 . In our company missing a day’s work means ________ 50 yuan.

A．losing

B．to lose

C．lose

D．to be losing

6 . The teacher asked his students to stop ________ and ________ the blackboard carefully.

A．talking; looking at

B．to talk; to look at

C．talking; to look at

D．to talk; looking at

7 . Dr.Yuan invents super hybrid rice, making it possible to increase rice harvest without e___________(扩大；伸展)the area of the field. (根据汉语提示单词拼写)

8 . Can you imagine________the work in twelve hours?

A．he finishes

B．him finishing

C．him finish

D．him to finish

9 . Exercise is the key ______ your health．

A．to improve

B．to improving

C．in improving

D．of improving

10 . I never dreamed of there _____ such a quiet place in the noisy city.

A．is

B．are

C．being

D．be