[单选题]Wearrivedatworkinthemorningandfoundthatsomebody__________intotheofficeduringthenight.
A.broke

A
had broken
B
has broken
C
was breaking
正确答案:B
题目解析
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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