Посмотри на таблицу и напиши предложения о том что учитель должен делать и что он делать не обязан.
Пример первого :A teacher has to srudy very hard.
Со второго
A teacher doesn’t have to wear formal clothes at work.
A teacher has to care about students.
A teacher doesn’t have to work at weekends.
A teacher has to fill in reports.
A teacher has to prepare material for students.