( )1. A. You can sing it well. ( )2. A. Because he wants to study harder. ( )3. A. Put them over there, please. ( )4. A. Yes. I'll choose one. ( )5. A. For two hours.
B. It's a pleasure. B. Because he's the best of all. B. I am afraid not. B. Yes. I'd better do it. B. In another 20 minutes.
C. That's right. C. Because he's afraid he'll be late. C. I think so. C. Yes. The one next to the park. C. At two o'clock.