听句子, 选择恰当的答语. 每个句子读两遍. 1. A. Yes, it is. B. No, I don't. C. It's cold. 2. A. Yes, it is cold. B. I'm studying. C. It's sunny now. 3. A. I'm watching TV. B. They are talking. C. They are at school. 4. A. Pretty good. B. I'm well. C. It is going to its home. 5. A. It's snow. B. S-N-O-W. C. Thank you.