阅读短文,并根据其内容判断下列句子正误。
Amy: My mum bought(买) me a new schoolbag.
Jack: Really? What colour is it?
Amy: It's yellow and purple. Look! Its' on my chair.
Jack: Oh, it looks nice. How much is it? (多少钱?)
Amy: Forty-eight yuan.
Jack: It's so big. What's in it?
Amy: Twenty notebooks and thirteen pens.
Jack: What? Twenty. notebooks?
Amy: Yes, they are for the Hope School.