ve water. for example, when we brush our teeth, we should turf off the tap. we shouldn't pollute the fresh water. if we don't save water, the last drop of water will be our tear. if we continue to pollute water, we will live in a thirsty world.

　pollution is becoming more and more serious all over the world. the factory eject the dirty water, as a result , the water has becoming polluted and many fish species are dying out. we can't live without water. the earth is our only home and we should make it comfortable for ourselves. we should save water in our daily life. for instance, turn off the shower while you are washing your hair. we should recycle water. don't let our tear become the last drop of water!

　　the most serious problem in the world is pollution. water is the source of life. we can't live without water. but now some of the drinking water has become polluted and is diminishing. something must be done to stop the pollution

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