问题 更新时间2023/4/3 12:59:00 I _____him the Christmas gift by mail because he came home during the Christmas holidays.A、ought to have sentB、couldn’t have sentC、must have sentD、needn’t have sent 答案 登录 注册 D 出自:安徽教育在线 >> 安徽理工大学-电气工程及其自动化