1.  Never waste fresh water.

2.  First, we mustn't waste fresh water.

3.  First, we mustn't waste water in our everyday life.

4.  So in my conclusion, we can't waste fresh water.

5.  Lastly, we must not waste water.

6.  As it is know , more and more fresh water is wasted or converted to durty water every day.

7.  I think, first, we must must use the water with more cares and mustn't waste water.

8.  We ought to instruct people not to waste fresh water, in order to give a best gift to our next generation.

9.  They wastes water in large quatity and purse the polluted water into the rivers, and as a result, we take the water out from the river to drink .

10.  Families and factories should not waste water.