His father had to find a room ___.A.to live in which B.to live in it C.to live in D.to live

问题描述:

His father had to find a room ___.A.to live in which B.to live in it C.to live in D.to live

B中的介词in已经有了宾语room了,出现的it作in的宾语是多余的,故选C.这个不定式作room的后置定语.