He kewn the fives could be of help to---- took over the job

问题描述:

He kewn the fives could be of help to---- took over the job
He knew the fives could be of help to---- took over the job.
A whoever B whomever C whatever D whosever
请问选哪个?为什么?

d 做take over 的主语
意思是他知道这五个对任何一个接手这项工作的人都很有用