填下面句子的空?I love places ______ the people are really friendly.

填下面句子的空?
I love places ______ the people are really friendly.
A.that B.which C.where
The world _______ is made up of matter .
A.in that we live B.on which we live
C.where we live in D.we live in ////
.,要原因.

1,where 考察定语从句,先行词places在从句中做状语,所以选where,不能选which,如果要,要用in which,that更不能用
2,D in the world 没有on the world 排除B,that前不能加介词,A错.用了where就不用再用介词in,C错.D正解,先行词world在从句中做宾语,所以可以省略关系代词.
我觉得我原因说得很清楚了,从语法角度,有什么不懂就再问吧,定语从句高中也算个难点,你加油了,有空看看语法书,新年快乐,不知道你初中还是高中,我高中