7. If we continue to destroy and waste the natural resources like this, we

will 　　　　it sooner or later.

6. Until now, we still haven’t know what kind of thing　　　　 it.

5. The little boy couldn’t 　　　　the toy.

4. It’s bad for your health if you often 　　　　too late.

3. Without saying anything, that boy　　　　 　quickly.

2. As a matter of fact, not all the theories　　　　 .

run away/take one’s eyes off/make up of/make sense

stay up/inspire/run out of/go over/take it easy

1. We should often 　　　　what we have learned, or we will forget it later.

10. No word can 　　　　(表达) my thanks to you at the moment.

9. My friends were wearing two or three sweaters for extra 　　　　(温暖).

8. A voice came from 　　　　(黑暗), but she couldn’t see anyone.