W: Good 'morning. 【1】
M: Yes. I'd like a pair of pants for my son.
W: Here are the pants. What colour does your son like?
M: He likes blue.【2】
W: Look at this pair. Do you like it?
M: 【3】Do you have any big pants?
W: Yes. How about this pair?
M: It's nice.【4】
W: 80 yuan.
M: Too expensive. What about 70 yuan?
W: Well.【5】. Here you are.
A. How much is it?
B. You may take it for 70 yuan.
C. It is too small.
D. Can I help you?
E. Blue clothes are his favourite.