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【题目】The criminal _______ murdering the judge, unfortunately, an unexpected accident made him lose his consciousness.

A.might have admittedB.could have admitted

C.should have admittedD.must have admitted

【答案】B

【解析】

考查情态动词+have done结构。句意:罪犯本可以承认谋杀了法官,但不幸的是,一场意外事故使他失去了知觉。A. might have admitted可能已经,可能性很小;B. could have admitted本来能做成的(却没做成);C. should have admitted本应当做某事;D. must have admitted必定做了……(表示对过去的推测)。结合后文unfortunately, an unexpected accident made him lose his consciousness.可知此处表示罪犯“本可以承认谋杀法官,却没做成”,应用could have done。故选B

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