are the days when teachers punished students for minor offenses, being late for school, for example.
A. Gone
B. Go
C. To go
D. Going
网友回答
(答案→)A. Gone
B. Go
C. To go
D. Going
解析：句意：老师因为小错误而惩罚学生的日子已经一去不复反了，例如，上学迟到。这是倒装句。相当于The days are gone. 日子一去不复返，可知选A。