阅读理解
Sam: Good morning! Can I help you?
Ann: Good morning! I can't find (找到) my sweater.
Sam: OK. What colour is your sweater?
Ann: It's pink.
Sam: Is this your sweater?
Ann: No, it isn't.
Sam: Is that your sweater?
Ann: No, it isn't. A rabbit is on my sweater.
Sam: Oh! It must be (一定是) this one.
Ann: Yes, thank you.
Sam: You are welcome!