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Water is very important to the human beings.But now many rivers and lakes are polluted.
And what shall we do ???
we can do like these things:
First we must protect the factory form pouring waste water into the river
Second we should stop people from throwing litter into the river.many kinds of litter may pollute the envirenment.
Finally we can tell the visitors how important the water is.
After doing these things,I think water will become clearer sooner or later.

Water is to our mankind ，It is very much significant ，Jet the pollution is continuously suffered in a lot of river lakes 。
We should stop the plant to place in proper order liquid waste to the river lakes 。Should stop people in to cast aside garbage to the river lakes ，Pollution headwaters 。In fact ，Safeguarding the environment wholly is very significant as to each of us 。

嘿嘿....英语水平6级哦..