1、高考英语时态和语态强化练习50题 B 1.---Oh,dear.Iforgottheairtickets. ---You_B_____something. A.haveleftB.arealwaysleaving C.areleavingD.alwaysleft 2.---I______sobusilyrecentlythatI__B____notimetohelpyouwithyourmath. ---That’sOK.Icanmanageitbymyself. A.havebeenworking;have B.