【题目】补全对话
A: Can I help you?
B: I 1.________ some tomatoes.
A: Look 2.________ these.
B: How nice! I think they are good. 3.________are they from?
A: Nanning. How many do you want?
B: 3 kilos. 4.________ 5.________ are they?
A: 12 yuan.
B: Here you are.