i have no room to live in 后面为什么要加介词in

i have no room to live in 后面为什么要加介词in I want to find a room to live (in),后面那个in介词啊要加的? I live in Room 302中的介词为什么用In I want to buy a house to live in 为什么后面要加in 关于省略介词类似于I have a comfortable room to live in.There's nothin have no place to live要加in吗 I have no place to live 还是 I have no place to live in 解释一下 I have no place to live 还是 I have no place to live in I don't have a room to live in /There is no seat to sit on t -we have no room to____(live in \live),but I can't decide(选择 we have no room to____(live in \live)谢谢. can you tell me which room i can live in 为什么live后加in