41.  In general, we should save our fresh water and improve our fresh water to solve this problem.

42.  Measures must be taken to "save" fresh water.

43.  So we must save every drop of water.

44.  Firstly, we must save every drop of water, for example, not let the water flowing when you go away .

45.  In a word, every people must responsible for saving water.

46.  First, we should save the fresh water, even a drip .

47.  How can we deal with the shortage of fresh water, the first thing is that we must save water .

48.  It can help us to control the fresh water shortage, but save is not enough, now scientists are busy searching a good method to produce water, that is to clean the used water for reuse in this system, we won't use up our fresh water .

49.  This can save much water.

50.  Personally, I think it's important for us to save water.