Camplete the sentences using must not / mustn't or do not / don't have to. 1) campers play music after 10 p. m. 2) students ask permission to stay out after midnight. 3) bicycles be parked in the front of the courtyard. 4) residents hang clothes on the windows. 5) the british ger visas to travel in western europe. 6) passengers lean out of the windows. 7) you pay for your tickets now. 8) it's rained a lot, so we water the garden. 9) you disturb your sister while she's working. 10) you knock when you come into my room.