选择正确的对话内容。

A. Hello. B. I'm reading a book. C. What time? D. See you at 4:00.

Du Xiaomao:

Lucy: Hi,it's Lucy. What are you doing?

Du Xiaomao: And you?

Lucy: I'm watching TV. Let's go to see a film, OK?

Du Xiaomao: Good!

Lucy: At 4:30 this afternoon.

Du Xiaomao: OK.