61.  The factory should use the water.

62.  So people use much water without limiting .

63.  We must tell all of people the importance of fresh water and ask them to use water less.

64.  We dare not use these water, because it is harmful to our health.

65.  We shall pay great attention to the way that we use water.

66.  With the increase of the people and the pollution of water, there is less and less water can be used .

67.  Firstly, we should use water as little as we can, don't wast a drop of water .

68.  Nowdays , with the increase of population, people use fresh water more and more , with the development of industry, on the one hand, more and more fresh water are used, on the other hand, water polution waste a lot of fresh water .

69.  It's well known that people always think that fresh water can be used for good.

70.  More and more water is used in industry.