【題目】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】

考查情態(tài)動(dòng)詞。句意：保羅在演講比賽中表現(xiàn)得很好。他上星期一定練習(xí)了很多次。must have done是對(duì)過(guò)去發(fā)生的動(dòng)作最有把握的猜測(cè)，意思是“一定”。故C選項(xiàng)正確。

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