从方框中选择适当的句子补全对话，其中有两项多余。

A. How about this pair? B. That's too dear. c. What can I do for you? D. May I try them on? E. What color do you like? F. Do you have any shoes? G. How much are they?

A: Can I help you?

B: Yes, please.

A: Yes. We have many kinds of shoes. They look very nice.

B: Good.

A: Five hundred yuan.

B: Do you have any cheaper(更便宜) ones?

A: Yes, we do. This pair is just one hundred yuan.

B:

A: Sure!