求写一篇建议的英语作文.

求写一篇建议的英语作文.
李晨同学身体很虚弱,作为他的笔友John,请你以书信的形式从饮食和体育锻炼两方面给他提出一些建议,使他变得强壮起来.
Dear Li Chen,
________________________________your weakness.As your friend,I think ___________eat more health food,________________________different kinds of vegetables,fruits and more some meat.__________________eat unhealthy food.Then you can get what your body really needs.
_________________________these thing,you need to _____________________some sports,like football,baskerball and so on.Doing some sports can help you to be energetic and creative.You can also_________________the illness____________________you in this way.
请用这几个词组填写：
you'd better do/not do sth
should/shouldn't do sth
need to do sth
it's good idea to do sth
keep away from
i'm sorry for sth