( )1. A. His father taught him to ride a bike. ( )2. A. Never mind. ( )3. A. I often send E-mails to you. ( )4. A. Be careful. ( )5. A. I wasn't afraid.
B. No. B. You'd better see the doctor. B. Sure, that's black @ bton.com B. Of course I will. B. I poured water over my jacket.
C. Yes, he can. C. I'm sorry to hear that. C. It's very nice toget your E-mail. C. Thanks, I won't. C. Yes, I did.