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You that late last night. It was harmful to your health. [ ]A. mustn't have work

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You that late last night. It was harmful to your health. [ ]A. mustn't have work

You        that late last night. It was harmful to your health.   [     ]A. mustn't have worked          
B. shouldn't have worked
C. can't have worked            
D. mightn't have worked

试题答案

B