英语题 按要求改写句子 快！！！！！！

Question

We use water for cleaning our classroom （对cleaning our classroom 提问）
We can save water by fixing dripping taps （对 by fixing dripping taps 提问）
We use paper to make paper planes 保持句意不变
We use paper ____ _______ paper planes

Answer 1

为你解答。
We use water for cleaning our classroom （对cleaning our classroom 提问）
What do you use water for?

We can save water by fixing dripping taps （对 by fixing dripping taps 提问）
How can you save water?

We use paper to make paper planes 保持句意不变
We use paper (for making) paper planes

Answer 2

1，What do you use water for？
2，How can we save water?
3,for making