5 Complete the letter with don't have to or mustn't and the verbs in the box. Then listen and check. dance bring speak wear forget Dear Students The school disco is this Friday at 7 pm. Please remember that you to ask your parents for permission. They ? ... to your teacher (it's not necessary - just sign the form). You ?... school uniform but you must wear suitable clothing. Also, you" friends from other schools – they aren't allowed in the school. Finally, don't forget - you .., but it's much more fun if you do!!