题目内容：
回答题：提示：一顾客去鞋店买皮鞋，店员问清楚鞋码大小后，给顾客拿鞋。顾客试穿后，认为合适，要买下它，并将鞋款交给店员。店员将应找回的零钱退给顾客。
Shop-assistant :____ 51____ ?
Customer:I want to buy a pair of leather shoes.
Shop-assistant : ____52.____
Customer: Size 40, please.
Shop-assistant : Yes,sir. Here you are.
Customer:May I try them on?
Shop-assistant : ____53 ____?
Customer:Ok. I'll take this pair.____54____ ?
Shop-assistant : Forty-five Yuan, sir.
Customer:Here is the money,fifty Yuan.
Shop-assistant :Thank you.____55____. Good-bye,sir.
C ustomer : Good- bye.
第51题_________
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