4. 没有人确切地知道为什么恐龙突然间从地球上消失了。

　 Nobody knows _______ ________ why dinosaurs disappeared from the earth suddenly.

3．很多人认为成名很重要。

　 Many people _______ great importance　 ___ becoming famous.

2. 随着时间的推移， 和许多青年人一样，他也开始喜欢上流行音乐。

　 As time ______ ______, he has begun to love pop music like many young people.

1.这个气味儿我很熟悉，但它到底是什么我想不起来了。

The smell is _______ ____me, but I can’t remember what it is exactly.

10. There is too much v______ on TV, which may have a bad effect on children.

9. It was g______ of you to share your money with me.

8. All nations, big or small , rich or poor, should be e______.

7. The record player is not of good q_______, so it won’t work well enough, I’m afraid.

6. It is such a s________ question that everyone can answer it.

5.The dog ___(咬)the robber in the leg when he tried to run out of the house