31.  In one word, we should realize the shortage of fresh water, and we should also save the water instead of wasting a drop!

32.  I think we should save fresh water from everyday's and everyone's water using , don't waste even a drop of water .

33.  In my opinion, first, each of us should save water.

34.  Secondly, we should save fresh water in our life.

35.  First, we should control the population; Second, we should save water; Third, we should make good use of the fresh water in the industry.

36.  First, we must save fresh water at once and everyone must do so.

37.  Let us save water together!

38.  We should save water.

39.  It is known to all that there is no life without fresh water, therefore we ought to save water.

40.  Secondly, factory must clean the portuted water and save water.