问题

He______ his work, otherwise, he wouldn’t be enjoying himself by the seaside.
A:must have completed
B:should have completed
C:ought to complete
D:must complete;
B:should have completed
C:ought to complete
D:must complete;
正确答案是:
同类题型
Students should be encouraged to ______ their own opinions, ______ right or wrong
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The eggs in this box are heavier than _______ in that box.
May I tell this to my close friend—No,you________.Never let anybody else know about it.