问题 更新时间2024/6/14 10:40:00 Your firm has been referred to us by the ABC Co., of Pakistan, ( ) we have done business for many years.A.whichB.with thatC.whomD.with whom 答案 登录 注册 A 出自:国家开放大学 >> 国家开放大学国际航运英语与函电