帮忙翻译几个句子，口语点

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because of my tests, and the national exam for university, i'm usually very busy. Therefore i can only log on during weekends. We have 6 hours of time difference, but i will keep in touch with you.
I will always leave messages to you when i log on.
Cause I should handle the exams, and prepare for the "Final One", I am always busy. I can only be online during the weekends. We have a 6-hour time difference, I'll still keep in touch with you though. I will shoot you a message when I am online.

基本无视语法..