◎ 题干
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
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“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…”主要考查了你对  【情态动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。