It_______fiveyearssincehe_______Beijing. A: was,left B: hasbeen,hasleft C: is,left D: isgoingtobe,hasleft

—Whydoyoulooksoworried?—Fredleftthecompanyhalfanhourago.Hiswork_______unfinishedsince. A: left B: wasleft C: hasleft D: hasbeenleft

Thelasttrain________thestationat11:30. A: hasleft B: leaves C: hadleft D: wouldleave

Ithas been fouryearssinceJohn________school. A: hasleft B: hadleft C: left D: wasleft

Thestudents______busilywhenMissBrownwenttogetabookshe______intheoffice. A: werewriting;hasleft B: hadwritten;left C: werewriting;hadleft D: hadwritten;hadleft

10、Susan_____her keys in the office so she had to wait until her husband came home. A、has left B、was left C、had left D、leaves A: hasleft B: was left C: had left D: leaves