I. 情景反应 根据你所听到的句子，选择恰当的应答语。
( )1. A. It is in the room. B. They are black. C. They are on the bed.
( )2. A. Yes, it is. B. Yes, they are. C. Yes, she is.
( )3. A. She’s my sister. B. He’s my brother. C. It is my dog.
( )4. A. Yes, he is. B. Yes, I am. ...