问：He is the only person ______ knows French in our class.是填that 还是 who?
问题描述：
问：He is the only person ______ knows French in our class.是填that 还是 who?
He is the only one of the staff _______ knows French.是填that 还是 who?,是不是先行词是one,只用who?
答
是的,只能填who,