some children want to challenge themselves by learning a language different from ____ their parents speak at home.
A.what B.which 为什么不选which？我想问下宾语从句中可以用which做引导词在从句中作宾语吗？？？？？请回答我这个问题！！！
这个引导词除了引导从句，还是from这个介词的宾语，而介词后面必须接名词、代词、动名词等做其宾语…… 如果想用which，句子改成这样比较好：some children want to challenge themselves by learning a language，which is different fromwhat their parents speak at home.
有些孩子想通过学习一门(与他们的父母在家里讲的不同的)语言来挑战自我。a language[that] (different from ____ their parents speak at home.)that后是language 的定语从句.Ais different from __B__ A B要是同一种东西.对
