听录音，选择正确的答语。
（_____） 1. A. They're ten yuan. B. It's ten yuan. C. It's ten.
（_____） 2. A. You're welcome. B. Here you are. C. Yes.
（_____） 3. A. They are red. B. It's red. C. They are so big.
（_____） 4. A. It's pretty. B. It's mine. C. OK. Here you are.
（_____） 5. A. Yes, it is. B. No, it isn't. C. Yes, they are.
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