Teaching students of threshold level is hard wor

Since it is unnecessary to consider students’ routine life, day school can lay stress on teaching instead of other aspects, such as management of dormitory and cafeteria.（英译中)

A college－level course of study intended to provide students with general academic knowledge （) occupational training.

A college－level course of study is intended to provide students with general academic knowledge ____

Teaching students of threshold level is hard wor

Teaching students of threshold level is hard work

My uncle is quite worn out from years of hard wor