Waterisveryimportanttothehumanbeings.Butnowmanyriversandlakesarepolluted. Andwhatshallwedo? Wecandolikethesethings: Firstwemustprotectthefactoryformpouringwastewaterintotheriver Secondweshouldstoppeoplefromthrowinglitterintotheriver.manykindsoflittermaypollutetheenvirenment. Finallywecantellthevisitorshowimportantthewateris. Afterdoingthesethings,Ithinkwaterwillbecomeclearersoonerorlater.
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