Напишите предложение как в 1 примере,о том, что учитель должен делать и что он делать не обязан. 1.study very hard--a teacher has to styde very hard. 2.wear formal clothes at work-- 3.care about students-- 4.work at weekends-- 5.prepare material for stydents--

A teacher has 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 prepare material for students