◎ 题干
— Tom is never late for work. Why is he absent today?
— Something _____ to him.

[     ]

A. must happen
B. should have happened
C. could have happened
D. must have happened
◎ 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“— Tom is never late for work. Why is he absent today? — Something _____ to him. [ ]A. must happenB. should have happened C. could have happened D. must ha…”主要考查了你对  【情态动词】【现在完成时】  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。