补全对话。 A: Can I help you ? B: Yes, please. __ 1 __ A: What size (尺寸) do you want ? B: Size Forty. A: OK. __ 2 __ B: Oh, they're black. He doesn't like this color. __ 3 __ A: Oh, yes. We have shoes in blue, red and white. The white shoes are very nice, too. __ 4 __ B: Yes, they are very nice. __ 5 __ A: They're 40 dollars. B: OK. I'll take them. A. Do you have any other colors? B. How much are they? C. I want to buy running shoes for my son. D. How much is it? E. What do you think? F. What color do you want? G. How about these shoes.