句型转换。

1. He sleeps 15 hours a day.(改为一般疑问句并作肯定和否定回答)

    — _____ he_____15 hours a day?

    — Yes, he _____.／No, he _____.

2. The boy relaxes a long time after school.(改为否定句)

    The boy _____ _____ a long time after school.

3. Please be very quiet.(改为否定句)

    Please _____ _____ very quiet.

4. He sleeps 12 hours every day.(对划线部分提问)

    _____ _____ hours _____ he sleep every day?

5. The girl is four years old.(对划线部分提问)

    _____ _____ is the girl?

6. My father is a doctor.(对划线部分提问)     

    What _____ your father do?     

    =What _____ your father?     

    =What _____ your father's _____?