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The man in prison insisted that he _________ nothing wrong a

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The man in prison insisted that he _________ nothing wrong and _________ set free.
A.had done; should be
B.should do; should be
C.had done; had been
D.should do; had been
答案A
insist后的从句谓语是“should+动词原形”这样的虚拟语气,要看该谓语动词所表示的含义.一般说来,若该谓语动词所表示的动作尚未发生,或尚未成为事实,则用虚拟语气;若该谓语动词所表示的动作已经发生,或已经成为事实,则不用虚拟语气.