It was hardly possible ( ) us to fulfil the task without the h

It was hardly possible ( ) us to fulfil the task without the help of others.
A、of
B、to
C、with
D、for
【正确答案】：D
【题目解析】：it was adj. for sb. to do sth. 句子含义是对于我们而言，没有别人的帮助我们几乎不可能完成这个任务的。