______for the fact that she got hit by a car and broke her leg on her way to school, she might have passed the exam.

A.Hadn’t it been

B.Had it not been

C.Was it not

D.Were it not

答案及解析： B

解析：

考查虚拟语气的省略倒装，if的非真实条件句可以省略if，提前had，should ，were，句意是：如果不是因为事实是在回家的路上，她被汽车撞到了腿断了，她就通过考试了。选B="if" it had not been the …表示和过去相反的虚拟语气。