问题
选择题
15．---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
答案：D
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15．---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：D