听句子,选择恰当的应答语。 ( )1. A. Yes, she is ( )2. A. It's a pencil case. ( )3. A. Yes, P-H-O-T-O. ( )4. A. Yes, they are. ( )5. A. Yes, I am. B. Yes, he is. B. It's blue pencil case. B. Sorry, I know. B. Yes, we are. B. Yes, I do. C. Yes, they are. C. It's red. C. P-H-O-T-O. C. Yes, she is. C. Yes, I have.