61.  So many people don't know that they should save up the fresh water.

62.  Then, we must save up the quantity of using fresh water.

63.  As it has been mentioned we can make a conclusion that we must save up the fresh water .

64.  We should try our best to save every drop of water.

65.  In a word, please save every drop of water in order to protect our beautiful earth.

66.  I think we must pay attention not waste fresh wate and save some water when we use it.

67.  And we must save the fresh water, can not waste it .

68.  Secondly, we should save the fresh water.

69.  It is our responsabity to save the fresh water in daily life.

70.  We should save every drop of water and make full use of it.