1. 补全对话。

A: Excuse me!

B: Yes. Please keep your desk clean.

A:

C: Wow! Your picture is so beautiful!

B:

C: Oh, I'm sorry.

B: Sure!

C:

B: Yes, work quietly.

A. Can I write my diary here?   B. May I use your pencil? C. Anything else?       D. OK. I will.          E. Be quiet, please!