1. 根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意思连贯、完整。

A:

B: Yes, please. I want to buy a sweater.

A: Which one would you like?

B: I don't like black. Do you have other colours?

A: Other colours? Oh, yes. We have blue, yellow and white ones.

B:

A: Yellow? Certainly.

B:

A: 90 yuan.

B: OK. Here's the money.

A: Thank you.