选择合适的句子补全对话。

Mike： Good morning, Amy.

Amy：It's a Walkman.

Mike：

Amy： Yes, I do. What do you do on the weekend？

Mike：

Amy： Oh, really?

Mike： Yes, he is. He's funny.

Amy：

Mike： Haha! He's John.

A. Do you often listen to music here? B. Who's he? C. What's this? D. Is your friend a boy? E. I often play ping­pong with my friend.