1. 看一看，读一读，选择合适的内容补全对话。

A. book    B. What's that?    C. your     D. Who's     E. her    F. This

Mocky: Hello, Ken.

Ken: Hi, Mocky.

Mocky: this?

Ken: is my mother.

Mocky: Oh, she's mother.

Ken: That's .