Learning means that you find out about something you do not know. So if some students already know the material, then they will not need to be in class. That is a waste of time. lt is better for them to be in a challenging class.
| 이전글 | pew0604|2019-02-11 | |
|---|---|---|
| 다음글 | 아미X망고|2019-02-11 |