we should ring our class teacher ____ school and ask ____ leave.要填哪些介词?
问题描述：
we should ring our class teacher ____ school and ask ____ leave.要填哪些介词?
答
To FOR
打电话到学校请假.
答
before school 上学前给老师打电话
ask for leave 请假
答
at,for
答
after school 放学后
ask for请求