根据对话内容，从方框中选择恰当的选项补全对话，其中有两项多余。

A：Good morning, Andy.

B：Good morning, Alice. Why do you look unhappy?

A：I like it so much.

B：Oh! I found a book on the playground(操场).Is it yours?

A：No, it isn't.

B：Are they yours?

A：No, they aren't. They are blue and mine are yellow.

B：

A：I don't know(我不知道).Henry's phone number is 367—1873.

B：OK. Thank you, Alice.

A：

A.This is my book. B.You can call him. C.You are welcome. D.What color are these? E.What about these pens? F.Are these Henry's pens? G.Because I can't find my book.