动词的分类：行为/实义动词、及物与不及物动词、瞬时与持续动词、状态与动作动词、 助动词、情态动词与连系动词

1. There is someone knocking at/on the door. Who ________ it be?

  A) may            B) will            C) can          D) must

the chair is very comfortable to sit on该句中的不定式与主语有动宾关系，因此必须是及物动词，不及物动词则该加上适当的介词。

阅读下面的短文，在标有序号的空白处填入一个适当的词，或填入括号中动词的适当形式。

I know how easy it is to start smoking and how difficult it is to stop. During adolescence, I became   79   to cigarettes. When l was young, I didn't know that it could do   80   to my heart and lungs. Neither did I know that my cigarette smoke could affect the   81   of non-smokers. However, what I did know was that my girlfriend thought I smelt terrible and that she wouldn't go out with me again   82   I stopped. 1 also noticed that I became breathless quickly. Then I knew   83   was time to quit smoking. I'm sending you some advice to help you 84   your resolve. Every time you feel like   85  (smoke), remind yourself that you are a non-smoker. I know it is not easy to get rid of the   86  , but millions have managed   87 (quit) and so can you. Keep trying, and you will   88   eventually.

动词填空  (用动词的正确形式填空)（共10小题，每小题1分，满分10分）

1.Fear prevented him from moving when he heard the sound of footsteps _______(approach).

2.Both the driver’s carelessness and the bad condition of the road that day _______(lead) to the accident.

3.The housing price ______(rise) in the past several months.

4.Those of poor immunity(免疫力), especially children and old people, should go to public places less to avoid _______ (affect) by the bird flu.

5.I hope that you will keep us ______(inform) how you are getting on with the work.

6.No wonder she looked so tired today. She _______ (surf) the Internet at 11 o’clock last night.

7.The box which ______(weigh) as much as 20 kilos is too heavy for the little boy to carry.

8.______(reduce) the risk of getting burnt, you should stay away from fire.

9.By the time the soldiers arrived at the airport, their enemies _______(take) control of it

already.

10.The child slipped(滑倒) and fell, _______ (hit) his head against the door.