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maryishard-working,she----------herlessonfrom7to10lastnight.AhasbeendoingBhaddoneCdidDwasDwasdoing
题目内容：
mary is hard-working,she----------her lesson from 7to10 last night.Ahas been doingBhad doneCdidDwas
Dwas doing优质解答
D
Mary is hard-working,she (was doing) her lesson from 7 to 10 last night.
过去的某段时间内正在进行的事,用过去进行时.但跟现在没关系
Dwas doing
优质解答
Mary is hard-working,she (was doing) her lesson from 7 to 10 last night.
过去的某段时间内正在进行的事,用过去进行时.但跟现在没关系
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