A:Hello,(shall we) go shopping.
B:That sounds (great)
C:(Can I help you)?
A and B:Yes,please.We need some clothes for sports.
C:Do you like these sports shoes?
B:No,(I don’t like)
A:And these short?
B:Very nice (How)are they?
C:$ 30
B:They are too expensive.
C:$20.OK?
B:That sounds good.I'll(buy)then Here's the money.
C:(Here)you are.
B:Thank you
C:(You’re welcome).Bye
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倒数第二个我不确定