2 . 这就是为什么我们应该关心野生动物的生存条件。
This is ________________ the living conditions of wild animals.

3 . 根据句意，选择短语并以其适当形式填空。

make progress; be concerned about; adapt to; make out; watch over day and night; on earth; die out; be aware of; on average

1. ________________, those who don’t smoke are healthier than those who do.
2. Nowadays more and more people ________________their health.
3. Could you please ________________my pet while I’m out?
4. A man who is satisfied with his present life will never ________________.
5. We felt puzzled. What ________________ did they want to do?
6. I heard the voices, but couldn’t ________________ what they were saying.
7. Dozens of doctors and nurses have been working ________________ for weeks.
8. If these animals and plants ________________, we will never see them again.
9. The world will be different, and we will have to be prepared to ________________ the future changes.
10. Most drivers ________________ the danger of drunk driving.

10 . 选词填空

pass out, side effect, slim down, take in, get into shape, out of danger, turn to, be concerned about, warn. . . against, be harmful to

1. He felt sick and dizzy and then ________.
2. Regular exercise helps the film star ________ and keep a slim figure.
3. This group of chemicals is known to ________ people with asthma.
4. Medicines sometimes have unpleasant ________.
5. We ________ his health.
6. He feels like dieting to ________.
7. I had to ________ the dictionary for help.
8. Fish ________ oxygen through their gills.
9. I ________ him ________ going to the east coast because it was so full of tourists.
10. The wounded policeman is now ________.