词形变换：选择方框里的词的正确形式填空，每词只用一次。discov

问题填空题

词形变换：选择方框里的词的正确形式填空，每词只用一次。

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.

答案

1. will do 2. discovered 3. surprising 4. to add 5. heavier

6. to hold 7. observation(s) 8. finding 9. burn 10. has used