根据对话的情景，从方框中选择适当的句子补全对话。其中有两项是多余的。

(In the classroom)

Kangkang: What's over there, Jane?

Jane:    Where?

Kangkang:    

Jane: Let's go and see. Oh, it's a black bag.

Kangkang: No, mine is brown. I think it's Lin Tao's.

Jane:    

Kangkang and Jane:    Hi! Lin Tao! Is this your bag?

Lin Tao: Oh, yes, it's mine. Thank you very much.

Kangkang and Jane:    
 

A. Let's go and ask him. B. Let me see. C. It looks like yours. D. Welcome to our class! E. On the floor, under the chair. F. You're welcome. G. Is your bag brown？