(单选题)
The accident which left 15 people on board dead ______ if both the angry female passenger and the bus driver had kept calm.
A.should have avoided
B.should be avoided
C.could have avoided
D.could have been avoided
参考答案:D
参考解析:
考查与过去事实相反的虚拟语气。句意:如果两个愤怒的女乘客和公交司机能够保持冷静的话,这场让15人丧生的事故就不会发生了。这里if从句是过去完成时,主句应用情态动词+have done,avoid为及物动词,有被动语态。故选D。
知识点:
