句型转换。

1.People usually eat breakfast in the morning.(对画线部分提问)

    _____ _____ people usually eat breakfast?

2. John does his homework at home.(改为否定句)

    John_____  homework at home.

3. I want to know about your family.  (改为一般疑问句)

    _____you_____to know about my family?

4. School starts at nine o'clock.(对画线部分提问)

    _____ _____ does school start?

5. home, you, get,. when, usually, do(?)(连词成句)

食品中禁用的防腐剂有硼砂、硼酸、水杨酸及其盐，检查硼酸、硼砂可用焰色反应定性检查，检查方法是样品灰化后，在盛灰分的坩埚中加数滴硫酸及乙醇直接点火，阳性时火焰的颜色是（）

A.黄色

B.红色

C.橙红

D.蓝色

E.绿色