从方框中选择合适的选项补全对话（每题1分，共5分）
A: Can I help you?
B: Yes, please.  .
A: Come and look at these T-shirts. They are for boys.
B: This one is nice.  .
A: 138 yuan.
B: Oh, it's expensive(昂贵的).
A:   . It's only 60 yuan.
B: Good. Well, this one is too long for my son.    .
A: Yes. Here is a short one.
B: OK, thanks.
A:   .

A. What about this one? B. want to go shopping with my son. C. I need a T-shirt for my son. D. How much is it? E. Do you like the color? F. You're welcome. G. Do you have a short one?