◎ 题干
— Bob didn't pass this exam. 
— He _____.

[     ]

A. should study hard
B. should have studied hard
C. should be studying hard
D. study hard
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Bob didn't pass this exam.— He _____. [ ]A. should study hard B. should have studied hard C. should be studying hard D. study hard …”主要考查了你对  【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。