OnSaturdays,studentsareveryproudtobe onthestree... 国语站 题库 2.15W 大中小设置文字大小 问题详情: On Saturdays, students are very proud to be on the street to guide passers-by to obey traffic rules. A. characters B. volunteers C. operators D. graduates【回答】B知识点:名词题型:选择题 TAG标签:onthestree #