5、ollutedwatermustbepurifiedbeforeitwasdischarged.Atthesametime,weshouldtryourbesttosavewater.The earth is our home and we have the dutytotake care of it for ourselves and for ourlater generations. Fortunately, more andmore people have realized these problems.Measure
6、s have been taken to cope with these problems by the government. Laws have been passed to stop pollution. I hope the problem will be solved in the near future and ourhome will become better and better.Thankyou~