【题目】It is difficult for us to imagine_____ life was like for slaves in the ancient world.
A.where
B.what
C.which
D.why

【答案】B
【解析】句意：很难想象古代奴隶的生活是什么样子的。imagine后需要一个宾语，“life was like…”做imagine的宾语需要一个不做句子成分的引导词，同时这个句子中like缺少宾语，所以空格处缺少一个兼词what。故答案选B。