You are really incompetent! It _____ hou

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问题 You are really incompetent! It _____ hours ago.A.finishedB.should be finishedC.must be finishedD.should have been finished

选项 A.finished
B.should be finished
C.must be finished
D.should have been finished

答案 D

解析句意：你真是不称职。这项工作应该在几小时以前就完成了。这里采用与过去相反的虚拟语气，即should have done的形式，故D项正确。

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