Istillcannotfigureou的精选

问题详情：一Istillcannotfigureoutwhyhemissedhisflight．一He       anaccidentonthewaytotheairport．A．couldhavehad     B．shouldhavehad     C．wouldhavehad    D．musthavehad【回答】A知识点：虚拟语...