1. I am a student. (改为一般疑问句) 
                              a student?
2. Does Ｍichael come from the USA? (作肯定回答)
    Yes,                         .
3. My hair is black. (就划线部分提问). 
                               is your hair?
4. That is an old car. (改为复数句) 
                 are old            .
5. She has big ears. (改为同义句) 
                 ears              big.
6. She is thirteen. (就划线部分提问) 
                               is she?
7. Is this a blackboard? (作否定回答)
                 ,                            .