1

You mustn't make noise.

You don't have to cook.

2

You mustn't throw rubbish on floor.

You don't have to stay until the end

You must buy a ticket

3

You must turn off your mobile.

You mustn't run

You have to watch the film

Хотя в последнем я не пойму)))мы должны или не должны смотреть фильм в самолёте))))