问题 更新时间2023/4/3 12:59:00 16[单选题,1.3分] If the market is left ____________, there will sometimes be shortages or over-production.A.to be runB.to run itselfC.running by itselfD.running 答案 登录 注册 参考答案:C 出自:联大 >> 河南大学-本科英语