when they entered the room,they found the windows open and something ____

题目

when they entered the room,they found the windows open and something ____
A.stolen B.to be stolen C.to steal D.stealing 我选了B 但答案是A,

答案

to be 是不定式,表目的将来,排除
东西是被偷的,应选-ed形式,故选A