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 |
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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 |