31.  We must make good use of water, and save it.

32.  We must try our best to make good use of little water.

33.  Every plant must make good use of fresh water.

34.  Firstly, and I think it most important that we should make good use of fresh water.

35.  We must make good use of the fresh water and not waste it.

36.  Second we must make good use of fresh water.

37.  For example, we should make good use of fresh water.

38.  Obviously, we should make the good use of the fresh water instead of wasting it.

39.  Now, let us call out: make good use of the water!

40.  we can make the good use of our conditions we can watch the news in TV, and read paper .