TheBeltandRoadForumforInternationalCooperation(一带一路*合作... 国语站 题库 1.48W 大中小设置文字大小 问题详情:The Belt and Road Forum for International Cooperation(一带一路*合作高峰论 坛)began _________ the morning of May14, 2017 _______ Beijing , China. A. in; in B. on; in C. on; on D. in; on【回答】B知识点:介词和介词短语题型:选择题 TAG标签:#