句型转换。

1. Is the book under the sofa? (做否定回答)

    ______, ______.

2. The keys are on the dresser. (对画线部分提问) 

    ______ ______ the keys?

3. Is it in the backpack? (改为复数形式)

   ______ ______ in the backpack?

4. I know the teacher. (改为否定句)

    I ______ know the teacher.

5. They are on the sofa. (改为一般疑问句) 

    ______ ______on the sofa?

正常 * * 分泌物为

A．白色稀糊状、无气味、量多少不等
B．白带浑浊黏稠、量少
C．量不增加
D．白带量较多
E．白带量多，清澈透明，稀薄似蛋清