王老师:19139051760(拨打)复制微信 题目 更新时间:2023/12/31 The old womahas three sons ,and _____ are studying abroad now.·A two of them ·B two of who ·C two of whom ·D of whom two 答案 登录 注册 单选题·A two of them 出自:青书学堂 >> 延安大学PowerPoint 图文演示技术 延安大学继续教育学院