2. One of the twins is active. The other is very quiet.

 用适当的连词将下列各题的句子合成一个句子。

1. Let's stay close together. We shall lose each other.

10. We don't make friends with him because  he never does      for others.

9. Anna,I can't find my MP4 player. Have you seen it      ？

8. He has several books on the desk, but      of them is on history.

7. I think not       understands the film because it is in English.

6. _______   is difficult if you put your heart into it.

5. 一How is Helen in the new school?

―She is doing very well. TTiere is       to worry about.

4. Could you give me      to eat? I'm so hungry.

3. Jack, _________ is waiting for you in the next room.