All children are required to school.A. attendB. goC. joinD. take part in

问题补充：

All children are required to school.

A. attend

B. go

C. join

D. take part in

答案：

(答案→)A. attend

B. go

C. join

D. take part in

解析：句意：所有的学生都被要求去上学。attend school上学；go to school上学；join加入某种组织或团体；take part in参加某项活动。根据句意故选A。