本人写了一篇英语作文,因为语法和词组不熟悉,希望高手能帮忙修改修改,

本人写了一篇英语作文,因为语法和词组不熟悉,希望高手能帮忙修改修改,
As the summer vacation/holiday is approaching,some college organization will organize a summer camp and is now recruiting .
This summer camp will focus on improving student's mental and physical fitness.On the one hand it aims to instill confidence,independence and optimism into student;on the other hand,it will train students' body and make them stronger.Throught participating int the activity,student can gain a lot of usefull things.
This kind of activity gathered students from different grades to communicate and exchange their ideas.This would improve the technique and ability of social intercourse.In addition,
cooperation is required when students faced whih big problem that could not be solved by one man.thus,team spirit improved.
We need 30 college student who are warm-hearted and good at English.College students that meet the requirements and want to take part int the activity please call us at 85264256 or email us at vol@126.com
其中有一个 词组不知道用没用对,一方面——另一方面.还有有些地方该不该加ed,总之帮忙检查下各种错误