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.
