Those unable to attend educational activities for any reason must go through procedures of asking for leave.

因故不能参加学校规定的教育教学活动，必须履行请假手续。

youdao

Those unable to attend educational activities for any reason must go through procedures of asking for leave.

因故不能参加学校规定的教育教学活动，必须履行请假手续。

youdao