选择合适的选项补全对话。

A．much

B．Can

C．cheap

D．at

E. expensive

A：Good evening.1.____ I help you?

B：Yes，I want a dress，please.

A：Please look 2.____ this one. It's very pretty.

B：But it's too 3.____．It's 350 yuan.

A：How about this one? It's ____．

B：But I don't like the colour. It's too colourful.

A：Do you like that yellow one?

B：It is nice. How ____ is it?

A：It's 100 yuan.

B：OK. I'll take it. Here is the money.

A：Thank you. Anything else?

B：No，thanks. Goodbye!