In some cases, the biggest difficulty for an English-language learning student is simply getting the necessary classwork online.

在某些情况下，学习英语的学的困难就是在网上获取必要的课堂作业。

She seems to have some difficulty with the classwork.

她对作业好像感到很困难。

In addition to classwork, you are supposed to put in 3-4 hours a day of private study.

除了课堂作业以外，你们每天要进行三至个小时的自学。

She hired me based on my classwork.

她雇我是因为我的课堂作业很棒。