◎ 题干
Something ________ otherwise he ________ here then.
[     ]
A. must happen; would have been
B. must have happened; would be
C. must have happened; would have been
D. would happen; would be
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Something ________ otherwise he ________ here then. [ ]A. must happen; would have beenB. must have happened; would beC. must have happened; would have bee…”主要考查了你对  【现在完成时】【虚拟语气】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。