句型转换。

1. How about the weather? (改为同义句)

    _____ the weather?

2. I thought he would go to college the next year, _____? (完成反意疑问句)

3. I really don't know what I should do about it. (改为同义句)

    I really don't know_____about it.

4. Stop talking in the reading room, _____? (完成反意疑问句)

石油尺的检定周期是（）年。

A.6个月

B.12个月

C.2年

D.3年