问题
选择题
The thief took off his shoes when he slipped into the house in order to steal something ___.
A．unnotice
B．unnoticed
C．unnoticing
D．to unnotice
答案
答案：B
题目分析：考查非谓语动词：句意：小偷溜进房间的时候脱下鞋子为了在不被注意的情况下偷东西。因为the thief和unnotice是被动关系，这里是过去分词做状语，所以选B。