14. M: Some people don’t know noise pollution. In fact, it is also a kind of pollution.　

W: Yes. It can make people who work and live under noisy conditions become deaf.　

Q: Can people become deaf because of noise?

13. M: What are you doing, Jane?　

W: I don’t know what light pollution is. I’m searching for it on the Internet.

M: Nor do I. After you know it, please tell me.　

W: OK.　

Q: What pollution don’t they know?

12. M: Have you ever been to West Lake?　

W: Yes, I have been there many times.　

M: How do you like it?　

W: I like it very much. There are many beautiful flowers here and there and many fishes are in the clean river.　

Q: Is West Lake polluted?

10. Do you like to live in Hong Kong?

Ⅲ. 11. M: I can’t stand the environment here.　

W: Nor can I. The chemical factory produces terrible gas. It makes me ill.

M: I agree with you. Let’s go and tell the government about it.　

W: OK, let’s go.　

Q: What are they talking about?

9. Have you ever been to England?

8. When are they going to return?

7. Where has Mr. Li gone?

5. Mr. Green’s students are cleaning up the beach.

Ⅱ. 6. How long have you lived in this city?

4. Wind is widely used for producing electricity.　

3. We should plant more and more trees.