国开《商务英语写作》形考任务四 形考试题 【题目】It is important that your client ______ the relevant L/C not later than April 10. must open opens open has to open 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!