Idroppedbyat600pmyes的精选

问题详情：—Idroppedbyat6:00pmyesterdaybutfailedtoseeyouatyourhouse.—I     inagymatthattime.A.wasexercising   B.amexercisingC.haveexercised   D.hadexercised【回答】A知识点：动词时态与语态题型：...