【题目】 Hillary Clinton would have been the first female president of the USA had been elected, but unfortunately she _________.
A. would fail B. had failedC. failed D. was failed
在线课程【答案】C
【解析】考查虚拟语气句意：希拉里克林顿如果当选的话她就成为美国历史上第一任女总统，但不幸的是她没有当选成。此题考查虚拟语气，希拉里没有被选上为过去发生的事实，故需要使用表示过去的一般过去时时态，故选C适合。