根据对话内容与上下文，在空白处填入适当的句子，使对话意思完整。

A: Good morning, madam. ____________________________________________? (1)

B: I'd like a T-shirt for my son.

B: ________________________________________________________________? (2)

A: Size L. He is a tall boy. He loves cotton T-shirts. _________________________

     _________________________? (3) It's made in China.

B: OK. Let me have a look. ___________________________________________? (4)

A: 120 yuan. It's popular now.

B: But I'm afraid it's a little more expensive and I don't like the colour.

A: Do you like the black one? It's only 80 yuan.

B: Hmm, it looks nice. _______________________________________. (5) Thank you.

A: You're welcome.

凭证更换包括（）

A.一般更换

B.特殊更换

C.满页更换

D.移行更换