mary is hard-working,she----------her lesson from 7to10 last night.Ahas been doingBhad doneCdidDwasDwas doing

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maryishard-working,she----------herlessonfrom7to10lastnight.AhasbeendoingBhaddoneCdidDwasDwasdoingma

mary is hard-working,she----------her lesson from 7to10 last night.Ahas been doingBhad doneCdidDwasDwas doing
mary is hard-working,she----------her lesson from 7to10 last night.Ahas been doingBhad doneCdidDwas
Dwas doing

mary is hard-working,she----------her lesson from 7to10 last night.Ahas been doingBhad doneCdidDwasDwas doing
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

选D
was doing
from 7 to 10 是一个时间段，表示一个持续进行的动作
last night 说明时间是昨晚，要用过去时。

选择D.
解析：Mary is hard-working,she was doing her lesson from 7 to 10 last night.
玛丽是个用功的女孩，昨晚上7点到10点她在做作业呢。
此句为过去进行时。

亲啊 选D 是过去某段时间正在发生的动作 所以是过去进行时态 望采纳 谢谢

选D、因为last night 是过去、从7到10连续用进行时、总的就是过去进行时

a

因为last night 只能用于过去时，不能用于完成时态 所以AB排除
昨天晚上7点到10点她正在做作业 所以应该选 D
C 句意不符合 因为有7点到10点 一般说正在做某事

答案选D was
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。

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