问几道初一的英语语法题啊!.
()—Whendidyouvisityourgrandpa?
—_______.
A.TomorrowB.IntwodaysC.ThreedaysagoD.Nextweekend
()Weaskedtenstudents_______lastweek.
A.whattheydidB.whatdotheydoC.WhatdidtheydoD.whattheydo
最好解释、分析原因