已经开学，没时间上网，努力考研 用英语怎么说？

This semester has started. I have no time to surf online. I am working hard at preparing for the entrance exams for postgraduate schools.

A new term bengins ,there is no time to surf the interenet,all I can do is trying my best on the postgraduate entrance examination.
自己都觉得怪怪的，做个参考吧！希望有人给改进一下。