91.  Firstly, we should make full use of usable fresh water and not waste it.

92.  If we don't pay an important tension of this, we will no water to use in the end.

93.  But to those who try their best to protect, discover or make good use of it, we should award them metal or material trophies.

94.  Make full use of our fresh water and avoid the sources of fresh water to be polluted.

95.  Firstly, we should take the best use of fresh water.

96.  In other words, we will have water use without end.

97.  We gather rain to use.

98.  So people always think that there is plenty of fresh water and we could use it no limited .

99.  Some people think fresh water is adequate for use.

100.  So that , The Fresh water becomes less and less can be use to drinking, washing;..