What's the rule?
You mustn't swim here.
What's the rule?
You must turn off your mobile.
What's the rule?
You mustn't eat here.
What's the rule?
You must be silent./ You mustn't speak loud.
What's the rule?
You mustn't put your feet up in the movies.
What's the rule?
You mustn't iron.
What's the rule?
You mustn't park here.
What's the rule?
You mustn't drop litter.
What's the rule?
You musn't turn right.
What's the "rule"?
You must check your internet connection.
What's the rule?
You mustn't turn left.
What's the rule?
You mustn't use flash when taking photos.