actions must--------(take) to stop rubbish -------(throw) about
问题描述：
actions must--------(take) to stop rubbish -------(throw) about
答
你好,这题的正确答案是;'
actions must taken to stop rubbish being thrown about.
前面是一个情态动词的被动语态,后面考的是一个短语,stop,from doing.