【英语】They don't know _____their parents are.A.that B.what C.why D.which

问题描述:

【英语】They don't know _____their parents are.A.that B.what C.why D.which

答案是 B
句子翻译为:他们不知道他们的父母是什么职业 这是定语从句,what充当主语