9. People get sick because of air pollution. It follows that we must do something about it.

☆单词聚焦☆

8. Cars and factories cause air pollution. As a result of air pollution, many people get sick.

7. Why can't we drink the water in our rivers and lakes? Because the water is polluted.

6. That's how I see it.

5. I absolutely agree.

4. Does anyone share David's opinion?

3. Well, it depends.

2. That's the point.

1. I can't agree with you on this point.

20. turn...inside ____ 把……翻过来

☆交际用语☆