题目内容：

A —— salesgirl         B —— customer

 A: Good afternoon, can I help you?

 B: Yes, 1.___________________________________________________ .

 A: We have different kinds of sports shoes. They’re all in style. What color would you like?

 B: I prefer blue.

 A: 2.________________________________ ?

 B: Size 40.

A: What do you think of this pair?

B: Great! 3._______________________________ ?

 A: Certainly. This way, please.

 B: Oh, they fit me very well. 4.________________________________?

A: 500 Yuan.

 B: 5.__________________________________________ . I can’t afford.

A: Well, I’ll give you a 20% discount.

 B: OK. I’ll take them.