Question

【题目】—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

Answer 1

【答案】D

【解析】

考查情态动词。句意：“汤姆上班从来不迟到。今天为什么没来？”“他________发生了什么事情。”根据“上班从来不迟到”可推知，汤姆今天迟到了，一定是发生了什么事情，根据句意可知用现在完成时态，排除A；根据must一定，should应该，could能。故选D。