【急】请高手帮忙改下【英语作文】

【急】请高手帮忙改下【英语作文】
请帮忙改下这篇作文,我知道个别介词和句式使用不得当,请有错尽管改.如果可以的话请告诉我错因.直接改错句即可.
The girl is tall,with long hair,wearing a pair of glasses.She is our monitor,which I admire most in our class.
She is a excellent leader in our class.She helps teachers to take charge of（管理,对否?） the class well.What’s more,at the School’s Sport Meeting,she lead（过去式,不懂） us training hard to compete in the programmas.
She is my closed friend,as well.She is always explaining the difficulties of study to me with patience.And it seems that she never be tired of my complex problems.I would never forget the words she told me,The silly bird should fly first.So she is such a person,who usually does some preview before others.So hardworking is she tha she gets a good result in study.
As a monitor,she is devoted to classwork.And as a friend,how kindhearted she is!Besides,she is a good example on study for me!