she didn't work hard at her lessons so she failed ()all the exams ? a;to pass b;passing

问题描述:

she didn't work hard at her lessons so she failed ()all the exams ? a;to pass b;passing
为什么不可以选B?不是有fail in doing sth 吗

fail to do sth是一个固定句型,意思是未能做成某事,有关fail的句型只有fail to do sth,没有fail in doing