補全對話

A: 1.

B:Yes,please.I want a pair of trousers.

A:What about these blue trousers?

B:I don’t like blue.

A:2.

B:B1ack.

A:These are black trousers.3.

B:Yes.They are nice. 4.

A:60 dollars.

B: 5.Thank you very much.

A:You’re welcome.

A.I’ll take them.

B.What color do you want?

C.Can I help you?

D.Do you like them?

E.How much are they?

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