最近一次英语考试作文,满分20,我只得17,想知道哪几处写错了(主要内容没问题）

最近一次英语考试作文,满分20,我只得17,想知道哪几处写错了(主要内容没问题）
Now many people don't mind their bodies,that's very dangerous.Everyone only has a life,we must try our best to keep healthy.
We should eat more fruit and vegetables,they can keep balanced.Sports can make us more healthier,so we should do more exercise.We can run after getting up and swim often.We should give up some bad habbits.For example,some teens always stay at home and don't go out to play with others ,and some students study for a long time without relaxing.
In my opinion ,we should pay more attention to our health.When we have a good body,we can do everything better.