1. 我们每天都需要用水，水是怎样来到我们家里的呢？请根据提示写一写。
Water comes into our homes
    Water⑴comes from the rain. It⑵. The water is not clean (干净的）there. We can't drink it. It must⑶.The water factory makes it clean. Then it⑷.It comes out from the tap. We use water to⑸.