题目内容：

This is the most beautiful house where I have lived
This is the most beautiful house that I have lived in
This is the most beautiful house in which I have lived 哪句对

优质解答

第一句对,This is the most beautiful house that I have lived in.
是因为定语从句中先行词前面有形容词最高级the most 修饰,只能用that； 或者不填.
这里不存在不填的答案,所以选第一句对~