英语选择题,能详细回答的进~

问题描述:

英语选择题,能详细回答的进~
China is different __________she was before liberation
A.from whatB.from that C.sinceD.on which
拜托说一下that which what 使用时的差别
谢谢了~

A.这是一个介词的宾语从句,从句中缺少表语,要选what .
that引导宾语从句时,在从句中不做任何成分
what 引导宾语从句,在从句中做主语,宾语,或表语
which引导宾语从句,在从句中做定语