阅读理解。
B
Miss Lin: Welcome to Rainbow Shop. Can I help you?
Mark: Yes. I'd like three bottles of water, please.
Miss Lin: OK. Anything else?
Mark: Yes. My mum would like a bag of bread.
Miss Lin: Do you want a large or small bag?
Mark: A small bag, please.
Miss Lin: Would you like some chocolate?
Mark: Yes. Two bars (块) of chocolate, please. How much are they?
Miss Lin: They are 25 yuan.
Mark: Here you are.