关于Allflights的百科

•  Allflights

• 问题详情： Allflights____becauseofthesnowstorm,manypassengerscoulddonothingbuttakethetrain. A.hadbeencanceled                    B.havebeencanceled C.havingbeencanceled                  D.beingcanceled【回答】C...
• 2021-11-0422979