句型转换。

1. This is a ruler. (对画线部分进行提问)

     _____ _____ this?

2. It's M-E-N. (对画线部分进行提问) 

     _____ do you _____ _____?

3. It's his jacket. (改为否定句) 

    _____ _____ _____ _____.

4. It is my mother's watch. (改为一般疑问句，并作否定回答)

    —  _____ _____ _____ mother's watch?

    — _____, _____ _____.

5. Is that a key? (做肯定回答)

    _____, _____ _____.

6. It is not my book. (缩写句子)

    _____ _____ my book.