题目内容：

9.When he got back home,he found someone ______ his house and ______ a lot of things.
A.break into,steal
B.to break,to steal
C.had broken into,had stolen
D.has broken into,has stolen

优质解答

选C,他回家发现有人入室偷了他很多东西.（某人偷他东西发生在got back这个过去时的动作之前,这就是过去完成时的用法特点.）