根据句意和所给汉语提示，写出句中所缺的单词。

1．他如往常一样，第一个完成作业。

He is the first one to finish homework______ ______.

2．张奶奶靠卖报纸赚钱。

Granny Zhang______ ______  by selling newspapers.

3．我们都用电梯上上下下。

We  __     the lift ______go up and down.

4．他姐姐最喜欢红色，所以她有很多红色的物品。

His sister likes the ______  red best, and     she has many red things.

5．外面的雨太大了，以至于我们无法准时到校。

The rain outside is ______heavy______ we can't get to school on time.

红光和绿光两种原色光等量混合，得到的是（）。

A.蓝光

B.青光

C.品红

D.黄光