题目内容：

A: Good afternoon!1.

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

A:2.

B: He likes black.

A: I'm sorry.3. We only have sweaters in blue and green.

B: The blue one looks nice. How much is it?

A: It is twenty dollars.

B: Oh, it is too expensive（昂贵的）

A:4.It is only fifteen dollars.

B: OK, I'll take the green one.

A:5.

B: Thank you.

A: You're welcome

A.What color does he like?

B.Here you are

C.What about this green one?

D.Here is the money

E.Can I help you?

F.How much is it?

G.We don't have sweaters in black.