几道关于完成时态的英语改错题
1.Alltheseyearstheyarecontributingarticlestoourmagazine.2.Ihavebeendrinkingfivecupsofcoffeethisafternoon.3.WhathaveyoubeendoingbeforeyouleftOxford?4.It'sagoodjob.Haveyoudoneitallbyyourself?5.It'salongtimesinceyoucometoseeme.6.Alicedidn'tseemuchofHenrylately.7.I'mgladtotellyouthatyoupassedtheexam.