题目内容：

We have two rooms _____ ,but I can't decide _____.
A.to live ;to choose which one
B.to live in ;which one to choose
为什么选B,不选A?

优质解答

live 是不及物动词,后面必须加in 才能接 rooms.which one to choose这个是固定句式,是疑问代词which,what,where等加上to do构成,给你举个例子：i don't know what to do.(我不知道该做些什么）know是动词,后面的whic...