Every pupil has his own potential so it is not proper to them two kindsA. classify; intoB.

问题补充：

Every pupil has his own potential so it is not proper to them two kinds

A. classify; into

B. put ;off

C. lead ; into

D. betray ; from

答案：

(答案→)A. classify; into

B. put ;off

C. lead ; into

D. betray ; from

解析：考查词组辨析：A．classify; into分类成，B．put ;off推迟，C．lead ; into带…进入， D．betray ; from背叛，句意：每个学生都有自己的潜力，所以把他们分类成两种不合适。选A。