Many years later when I came here again,I found their working conditions__the same__before.选什么？为什么？

A were stay,as

B were stay,like

C stayed,like

D stayed,as

选D

首先be动词（were)后面不能加动词原形（stay)，所以AB不对；

the same as是个固定用法，所以选D。

a

选A，因为在conditions后是一个从句，由其所省略的that引导的从句。而the same as ....是固定搭配，像什么什么一样的。

D，过去时态决定了stay的过去形式

the same as 和···一样 固定搭配用法

D希望是对的

D