of them knew about the plan because it was secret. A.Some B.Any C.No one
问题描述：
of them knew about the plan because it was secret. A.Some B.Any C.No one
D.None
是不是选A
答
D.句意：没有人知道这个计划,因为它是个秘密.
另外,none 可接of 短语,而no one 不能接（no one =nobody）