На примере правил дорожного движения написать несколько предложений (5 - must, 5 - mustnt) на английском языке. Можно взять правила поведения в общественном месте.

Must:

1) You must be very attentive while crossing the street.

2) You must look both sides no matter what.

3) You must wait till the green light appears and only then you may cross the road.

4) She must have been more careful on her way back home.

5) You must follow the rules if you don't want to be a part of the accident.

Mustn't:

1) You mustn't play next to the road.

2) You mustn't cross the street when the red light is on.

3) You mustn't run on the street.

4) You mustn't throw any trash on the streets.

5) You mustn't hide any information about the car accident.