补全对话
A: What can I do (1)__________ you?
B: Yes, I'd (2)__________ some potatoes.
A: How many do you (3)__________ ?
B: Four, please. (4)__________ much are they?
A: Potatoes are two yuan, each (5)__________ and there are four.
B: OK. I (6)__________ take them.
A: (7)__________ that all?
B: No,I want some tomatoes, (8)__________.
A: OK. (9)__________ you are.
B: Thanks.
