21.  by the river bank, there are a lot of trees, the trees have a lot of fruit in autumn.

22.  Because the fresh water has lots of resources, such as raining water, river ..

23.  We have a lot of fresh water.

24.  Getting to know the world outside the campus has a lot of ways.

25.  People have a lot of other things except work.

26.  If you have a lot of trouble in your body, it can only give you pain .

27.  People have a lot of other things except work.

28.  Thus the post offices have a lot of works to do.

29.  I have a lot of friends because of my character.

30.  but I will become a good teacher, and will have lots of students.