题目内容

选择填空(每词只用一次)

must might couldn't can't

①We ________ operate the machine last week, but we can operate it now.

②Look! The man ________ be our headmaster. I know he always comes to school this time.

③He said if he ________ ask another question.

④The boy ________ be Lin Feng. He has gone to Wuhan with his parents.

答案:
解析:

  解答:①表示“不能;不会”,选couldn't.

  ②表肯定的猜测选must.

  ③表示对过去肯定的猜测肯定,选might.

  ④表示对现在否定的猜测,选can't.


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discover  do  surprise  burn  hold  add  heavy  find  use  observe

 
 

 


1. We ________ a science experiment in class tomorrow.

2. Do you know who ________ America?

3. They will show us a ________ experiment in class.

4. I have nothing ________ to my letter.

5. Air is ________ than we think.

6. The force is strong enough ________ the water.

7. I will ask the class to make ________ and guess what will happen.

8. An Easter egg hunt is a game for ________ eggs.

9. To make a candle ________, you “light” it.

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