求大神帮忙批改一下英语作文

After watching the film 'freedom writers' ，i（I ，大写） could not help being impressed by it.It shows us the lifes（lives，复数错误） of these students who lived in the underworld and lived under （去掉the） racism. The teacher, Erin Gruwell, helped those students by（with，不用by） steady effort（efforts）. And finally , those students beat their demons, got out of the trouble and（，换成and）got renascence.
As for the teacher, she was very diligent , and she had a（an） enthusiasm in work, finally her persistence paid off. As far as I'm concerned, as students , we also should need a (an) enthusiasm in study, and we should believe that as long as we give an（缺个单词） we hang in, we can succeed.
As for those students , some of them had miss（missed） their parents long ago, and they lived in poor. Even they had dangers to be killed every day. By contrast, we should tresure（单词错误？） all the things we are owning. And at the end of the film, all the students had changed themselves. So we also should accept those suggestiones（suggestiones，复数形式错误） with an open mind, and change our shortcoming （shortcomings）.

我在检查一遍，楼主先看着。