题目内容

---What _________ to the building?   ---It _________ when all the people were sleeping.
A.has happened; was broken inB.was happening; was broken down
C.was happened; broke into D.happened; was broken into
D               
             
试题分析:考查动词短语。句意 这个建筑物发生什么事了?当人们睡觉时,门被撞开了。问的发生了什么事,故一般过去时。第二空考 break into 破门而入,故用被动语态。所以选D项。          
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