Seeing the students well______for the final exam,the teacher nodded with satisfaction.

问题描述:

Seeing the students well______for the final exam,the teacher nodded with satisfaction.
答案是prepared 这是怎么回事?怎么个结构呢?我还想问,填having perpared 行不行?

well prepared for 是一个词组 意思是已经很好的准备好了