Is this the room where he lives in?

Is this the room where he lives in? Is this the room he lives? is this where he lives? The room that he lives in is very small Where is he .He ()in the sitting room.He ()TV this is the place where the snake lives in 该把in This is the room in which he used to live.和This is the room He is in the room ____ clean the room.("that" or "where") He still lives in the room _____ there is a beautiful table. -Where is he?The light in his room is off. -He ____sleeping It is in the room where he was born .为什么用“where”? He lives in the room ____window faces to the south.