mary is hard-working,she----------her lesson from 7to10 last

学习时间:2026-08-10 18:58:46 阅读：3590

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

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2026-08-10 18:58:46

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DMary 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