听句子,选择正确答语。 ( )1. A. Often. ( )2. A. Go swimming. ( )3. A. Because it's interesting. ( )4. A. I used to listen to music. ( )5. A. Good idea! B. Two days. B. Go skiing. B. Because I know little about it. B. I enjoy dancing. B. You are right. C. About an hour. C. Go fishing. C. Because it's boring. C. I like fishing. C. Thank you.