补全对话

A. This is a mobile phone. B. You are welcome. C. You can use it go on the Internet. D. May be I can use it read an e-book.

Mary: Look at it. What's this?

Li Ming:

Mary: What can I use it to do?

Li Ming:

Mary:

Li Ming: You are right.

Mary: Oh, thank you.

Li Ming:

Mary: Bye.