This is the room where we lived last year.这里为什么不能用关系代词that而用关系副词where

this is my room ,that is the ___(twin) room 填空this is a room the hotel This room is as big as that one.(保持句意不变) This room is the This is my room.Near the window there is a___. “Whose room is this? This is our room,and your room is down the p____. This is the teachers’ reading-room这句话对吗? This room is biggest of the three.改错 Is this the music room?(作否定回答) This is the room where I once lived. this is the ____(teacher) room 所有格填空? this way ,plese.the __(lady ) room is here This is the computer room.改成否定句 怎么改 Is this the room he lives?这个句子对不对?为什么? What is this room like This is p_____of her room. the living room is larger than any other room in the flat (保持原句的意思)the living room is ---- ---- ---- ----rooms in this flat This room is the biggest in my house.(改为同义句)This room is the biggest in my house.(改为同义句)This room is_ _ _ _ room in my house.