Составте 3 предложения с must, 3 с musn't, 3 с shold, 3 с sholdn't.

They must wear uniform in school.
The must turn off mobiles during the performance
The must read all this poem

The mustn't eat during the performance
The mustn't running on the road
The mustn't speak during the test

The should be careful on the road
They should sleeping more then 7 hours
They should be polite with teacher