帮忙翻译一点东西

I am so glad to see you, but I have sent you a letter that I am a middle school student. Do you know, that Chinese students' homework is too much, so I almost have no time to be online except at the weekends. Please forgive me. But the National day is coming. I may have some time to write to you, I hope I can hear from you at that moment.
My MSN address is~~~

Glad to be your friend,i told you i am still a student in the last letter.Do you know?There are too many classes for Chinese students,so i almost have on time to get on line to write back except saturdays and sundays.Wish you could understand me .But National Day is coming,i will have more time to answer you then. I hope that i could receive your letter again then .
And my MSN is ``````