单选题 There were 30 students and ______ of them passed the exam.
【正确答案】 B
【答案解析】[解析] 本题考查不定代词。everyone和everybody侧重于整体而言,every one侧重于个人,指“每一个人”;every后必须接名词。句意为:一共有30个学生,每个人都通过了这场考试。