We arrived at work in the morning and found that somebody__________ into the ...

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问题 We arrived at work in the morning and found that somebody__________ into the officeduring the night.

选项 A.broke
B.had broken
C.has broken
D.was breaking

答案B

解析句意为早上上班时我们发现夜里有人闯入了办公室。break动作发生在found动作之前。所以应用过去完成时态,故选B。
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