词形变换:选择方框里的词的正确形式填空,每词只用一次。(10分)

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.

10. When the candle stops burning, it ________ up all the oxygen in the air.

 

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