【求助】帮忙改正英文自我介绍的语法错误!

题目

【求助】帮忙改正英文自我介绍的语法错误!
本人英语无比之差,求帮改语法错误,拜谢!
It's my great honor to introduce myself to you here.My name is XXX,I'm twenty two years old.Now I study in XX University and my major is XXX.In the past four years,I studied hard.I have passed the CET-4(请问这个该怎么说,是直接念字母么?).At the same time, I actively participated in community activities.I have organized large fundraising activities and responsible for community's management work.I'm patient with others,careful to do things,sureness for work and dare to face pressure.Today,I apply for this position,I have prepared for earnest study,industrious work and serves for customers,hope you can give me a chance.Thank you!

答案

It's my great honor to introduce myself here.My name is XXX,I'm twenty-two years old.Now I am studying in XX University and my major is XXX.In the past four years,I studied hard.I have passed the CET-4(直接念字母可以).At the same time,I actively participated in community activities.I have organized large fundraising activities and I am responsible for community's management work.I'm patient with others and i am careful to do things,sureness for work and dare to face pressure.Today,I apply for this position,I have prepared for earnest study,industrious work and serves for customers,hope you can give me a chance.Thank you!
写得很不错了,只有一两个大问题而已.已经改了.