从A-G选项中选出能填入空白处的最佳选项补全对话。

A: Good afternoon.

B: I'd like to buy a computer.

A: OK. Some are made in China, and some are made in other countries.

B: The one looks very nice.

A: In China.

B:

A: Sure. You press this button（按钮）and hear the sound of "Di".

B: It's easy. How much is it?

A: 8, 500 yuan.

B: Wow, that's too expensive! I can't afford it. Do you have a cheaper one?

A: How about this one? They use the same type, but just a little smaller.

B: Oh, this one is just good, too. And the price is OK, just 4, 500 yuan.

A. What can I do for you? B. Where is it made? C. We have many different kinds of computers here. D. Can 1 help you? E. Can you show me how to use it? F. What is it made of? G. l will take it.