You should never lose your temper with the students; they are only kids.A. in allB. afte

问题补充：

You should never lose your temper with the students; , they are only kids.

A. in all

B. after all

C. at all

D. first of all

答案：

A. in all

(答案→)B. after all

C. at all

D. first of all

解析：考查词组辨析：A. in all总共，B. after all毕竟，C. at all根本D. first of all首先，句意：你不能对学生发脾气，毕竟他们是孩子。故选B。