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【题目】Paul did a great job in the speech contest. He many times last week.

A. need have practisedB. might practise

C. must have practisedD. could practise

【答案】C

【解析】

考查情态动词。句意:保罗在演讲比赛中表现得很好。他上星期一定练习了很多次。must have done是对过去发生的动作最有把握的猜测,意思是“一定”。故C选项正确。

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