从方框中选择句子完成对话，其中有两个是多余的。

A. Are they on the bookcase, too?  B. It's under the sofa. C. How about Mom's keys?   D. What's this in English E. Is my computer game on the table? F. where's my backpack? G. Where are my books?

A: Excuse me.  

B: No, it isn't. It's on the bookcase.

A: Oh, OK. How about my books?  

B: No, they aren't. They are on the chair.

A: Oh. So, where's my pencil case?

B:  

A: And  

B: It's under the table.

A: Oh, OK.  

B: The keys? They're on the table.

A: Thank you very much.