【題目】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】

考查情態(tài)動詞+have done結(jié)構(gòu)。句意：罪犯本可以承認(rèn)謀殺了法官，但不幸的是，一場意外事故使他失去了知覺。A. might have admitted可能已經(jīng),可能性很��；B. could have admitted本來能做成的（卻沒做成）；C. should have admitted本應(yīng)當(dāng)做某事；D. must have admitted必定做了……（表示對過去的推測）。結(jié)合后文unfortunately, an unexpected accident made him lose his consciousness.可知此處表示罪犯“本可以承認(rèn)謀殺法官，卻沒做成”，應(yīng)用could have done。故選B。

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