mary is hard-working,she----------her lesson from 7to10 last nigh_英语解答

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

人气：438 ℃　时间：2019-11-14 06:46:48

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