选择适当的句子填空，使对话完整。

Xiaoling: Hello, Ben.

Ben:

Xiaoling: What's this?

Ben:

Xiaoling: Do you have a pencil?

Ben:

Xiaoling: Is it in your bag?

Ben:

Xiaoling: May I use it?

Ben:

Xiaoling: Thank you.

A. OK. Here you are. B. Hello, Xiaoling. C. Yes, I do. D. It's my bag. E. Yes, it is.