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She knows so much about England.She there before.A.must beB.must liveC.must have beenD.must have liv

编辑:chaxungu时间:2026-04-24 12:53:43分类:高中英语题库

She knows so much about England.She ________ there before.
A.must beB.must liveC.must have beenD.must have lived in在线课程C