31.  Fresh water is one of most important things for our lives, which is well know for us.

32.  Fresh water is the most important thing in our life.

33.  Another important thing we should do is to solve the question of pollution then we can use the water again and again .

34.  The most important thing for us is to save water.

35.  Fresh water is an important thing of our life, this is dearly .

36.  To the government, to reduce the polution is the most important thing.

37.  The ways are various, the most important thing is to choose the one that fits you most .

38.  The most important thing is to have a strong determination.

39.  No wonder some people believe that money is the most important thing in the world.

40.  However, too many activities, on the other hand, will come a lot of problems, If you spend a lot of time and delay your study or other important things, good things can also become bad things.