It is reported that some wild animals were found_______in a big cave

问题描述:

It is reported that some wild animals were found_______in a big cave
A.to hide dead B.hidden dead
为什么
那可不可以用to be hidden

这是一个语法结构,be found done 发现被动的状态,不定式表示未完成的状态,根据语意,只能选B
竭诚相助,