听录音,选答句。 ( ) 1. A. I'm looking at the dog. ( ) 2. A. We are reading books. ( ) 3. A. In the sky. ( ) 4. A. Yes, we are. B. I see a big elephant. B. They're jumping. B. In the river. B. Yes, they do. C. Yes, I see. C. They are in the park. C. They're flying. C. No, they aren't.