Antarctic _______ we know very little is covered with thick ice all the year round.A.whi

问题描述:

Antarctic _______ we know very little is covered with thick ice all the year round.A.whi
Antarctic _______ we know very little is covered with thick ice all the year round.
A.which B.where C.that D.about which
为什么不能用where答案C

本题答案选D
因为从句中缺乏宾语成分,需要关系代词充当宾语
know about是固定词组