Mr Smith has two sons ,one of (空缺)working as a bus driver now.A.who B.whom C.Them D.whose

问题描述:

Mr Smith has two sons ,one of (空缺)working as a bus driver now.A.who B.whom C.Them D.whose

C
逗号后用的是非谓语动词形式,并非一个完整的句子,因此不能选关系代词whom,关系代词有连词作用,要连接两个句子,所以此处选一个普通代词即可,也就是them.还有不懂的吗?