5. 阳光镇过去的视频将会被展示。

4. 空气污染是世界最大的问题之一。

3. 动物受到土地和水污染的伤害。

2. 如果空气不被清理干净，我们会受到伤害。

四、完成句子

1. 在河里丢垃圾可能导致水污染。

10. Tm not sure if the patient (operate) on soon.

9. Laura just (write) a very good article about water pollution.

8. I (help) you introduce the importance of protecting the environment to people if I have time.

7. Children in poor areas have to work instead of (go) to school.

6. Your voice can be made  (sound) louder by microphone.