句型转换。

1. My cap is yellow. (对划线部分提问)  

    ______ ______ is ______ cap?

2. The man in the black coat is my teacher. (对划线部分提问)  

    ______ ______is your teacher ?

3. What color is the book? (同义句转换)  

    What's  ______  ______  ______ the book?

4. Whose shirt is that ? (同义句转换)  

    ______ is that ______  ?

5. Those are her red dresses. (同义句转换)  

    Those red dresses ______ ______.

THDS车辆段工作站发生故障后修复时间昼间不超过（）。

A.2h

B.4h

C.6h

D.8h