Wemustdosomethingto 国语站 题库 1.61W 大中小设置文字大小 问题详情: We must do something to _____ factories _____waste water into the river before it is cleaned. A. stop; pouring . B. prevent; to pour C. keep; pouring D. stop; to pour 【回答】A知识点:动词和动词短语题型:选择题 TAG标签:Wemustdosomethingto #