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Peter is made_______ his room once a week.
A. clean              B. to clean         C. cleaning
答案:B
试题分析:句意:皮特被要求一个星期打扫一次他的房间。make sb do让某人做某事,在被动语态中不能省略to,sb be made to do sth.某人被要求做某事。故选B。
考点: 考查被动语态的用法。