Trasforma le frasi usando MUSTN'T, poi premi "Controlla". Es: "Please don't disturb." => "You mustn't disturb.". Se hai bisogno di aiuto, puoi cliccare sul pulsante "Suggerimento" per ottenere una lettera gratis.
Don't be late, please.
Smoking is not allowed in the classroom.
Please, don't leave your luggage unattended.
Please don't shout when you are in a library.
Students and teachers are not allowed to use mobile phones in the classroom.