阅读对话, 选择正确的答案。

A: Good morning, Mr. Green.

B: Good morning. Are you Su Hai?

A: No, I'm not. I'm Su Yang. Would you like a sweet, Mr. Green?

B: No, thank you. Don't eat in the library!

A: Sorry, Mr. Green.

B: Are you Mike?

C: Yes, I am.

B: Don't drink here, Mike.

C: I'm sorry.

B: Don't shout, Liu Tao and Wang Bing!

D&E: Sorry, Mr. Green.