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——Tom is never late for work. Why is he absent today?
—— Something _____to him.
A．must have happenedB．can have happened
C．must happenD．can happen
A
考查must表推測，must+have done表示對過去事情肯定的推測。句意：湯姆工作從來沒遲到過，為什么他今天沒來？他一定出什么事了。故選A。
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