He his work, otherwise, he wouldn’t be enjoying himself by the seaside.A. must have completedB. should have completedC. ought to completeD. must complete 题目和参考答案——青夏教育精英家教网——

题目内容

He______ his work, otherwise, he wouldn’t be enjoying himself by the seaside.

A. must have completedB. should have completed

C. ought to completeD. must complete

A

【解析】

试题分析：句意：他一定是完成了他的工作，否则他不会在海边玩得那么开心。A. must have completed对过去的肯定推测；B. should have completed本应该完成，实际上没完成；C. ought to complete应该完成；D. must complete必须完成。表示对现在的推测。故选A。

考点: 考查情态动词表推测的用法。

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