31.  He went downstairs, where his mother and his tow sister were washing up the tea thing in the kitchen.

32.  instead we saw rubbish every where on the surface of the river floated something dirty and dead fish .

33.  It was a good place where we studied English.

34.  Having realized where and how we can get help to keep in touch with the society .

35.  I believe where there is the will there is the way.

36.  When we go out of the "ivory tower" where is no understanding of real society, we will slowly improve our abilities to analyze and solve problems.

37.  Because it can make me know the real world, some students get out of the "ivory tower" where they had know the real world, through social practice, which will help them improve their ability to analyze and solve problems .

38.  We use fresh water everyday and every where.

39.  They can see the water of rain, river and well every where, so they think there is a lot of fresh water in earth.

40.  Where there is no water there is no life.