问题
选择题
He ________ have completed his work; otherwise, he wouldn't be enjoying himself by the seaside.[ ]
A.should
B. must
C. wouldn't
D.can't
答案
答案：B
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He ________ have completed his work; otherwise, he wouldn't be enjoying himself by the seaside.[ ]
A.should
B. must
C. wouldn't
D.can't
答案：B