问题描述：
英语7.The police found that the house ________ and a lot of things _______.
7.The police found that the house ________ and a lot of things _______.
a.has broken into;has been stolen b.had broken into;had been stolen
c.has been broken into;stolen d.had been broken into;stolen
为什么
7.The police found that the house ________ and a lot of things _______.
a.has broken into;has been stolen b.had broken into;had been stolen
c.has been broken into;stolen d.had been broken into;stolen
为什么
问题解答：
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