老师建议我们在考试前对笔记进行一些修订。

The teacher suggested we make some ___revisions to our notes before the exam.

老师要求我们在提交论文前完成最后的修改。

The teacher asked us to complete the final ___revisions before submitting the essay.

期末考试前，他花了整个下午进行复习。

He spent the whole afternoon making ___revisions before the final exam.