国开《商务英语写作》形考任务四 形考试题 【题目】Your firm has been referred to us by the ABC Co., ______ we have done business for many years. which with that whom with whom 试题来源商务英语写作 查看整套课程试卷 此内容查看价格为0.2金币，请先登录如有问题，请联系微信客服解决！
