这是一些Chinglish（中式英语）的句子，麻烦各位英雄好汉帮忙改成正确的英语，多谢了！！！
1 The chief reason for the change have 5 points
2 Reading books can learn knowledge
3 Old men like calm,while young men like active
4 However,everything has its black side
5 Going to net can widen our eyes
6 We should make every efforts to become versatile student so that we can realize our motives and makes as many contribution to the developing country and human civilization's progress
7 Because he was absent,I have to pay a later visit
8 Smoke cigarettes will do harm to our body
9 Nowadays,young people who seek to go abroad are becoming more and more
10 When people try to attain high speed by using cars and buses,and this creates new problems
11 To improve one's writing skill,regular practice is necessary
12 Comparing these two items,there are differences as well as similarities
13 We young peole are now living in sugar water,and we have condition to eat good things
14 People think go to a movie cost a lot of money
15 It makes you tired if you exercise to much

(all above make us sick)

1.There are 5 points of the reason for the change.
2.We can learn knowledge by reading. Or Reading can enlarge our knowledge.
3.The elderly like silence while younglings are active.
4.However,everything has it's own side effect.
5.Going to net can enrich our views.
6.We should do our best to become versatile so that we can realize our motives and make as much contribution to the progress of the developing countries and human civilization.
7.I have to pay a visit later because of his absence.
8.Smoking will do harm to our health.
9.Nowadays,the number of young people going abroad are getting larger and larger.
10.It creates new problems that we try high speed.
11.Regular practice is necessary to improve one's writing skill.
12.Comparing these two items,there are differences as well as similarities.
13.We young people are now have better living conditions,so that we have opportunity to eat good things.
14.People think it costs lot to go to cinema.
15.Too much exercise makes you tired.