改写句子。

1. They are going to be teachers when they leave Beijing Normal School. (对换线部分提问)

    _______ ______ they going _______ _______ teachers?

2. I am going to make a soccer team when I grow up. (用My brother改写)

    My brother _______ _______ make a soccer team when _______ ______ up.

3. I am going to Beijing in 2008. (对换线部分提问)

    _______ ______ _______ _______ in 2008?

4. My father said he is going to live in a beautiful place when he retires. (同义句转换)

    My father said he is going to live in _______ ______ when he retires.

5. She did some hard work last week. (否定句)

    She _______ _______ ________ _______ hard work last week.

电弧炉氧化法冶炼，出钢要求为（）。

A.白渣混出

B.先钢后渣

C.电石渣

D.黄渣