Ответ:
1) You're not allowed to speak in the gallery.
2)You mustn't leave litter in the square.
3) It's forbidden to take pictures in the museum.
4) It's prohibited to walk dogs near the kindergarten.
5) It's forbidden to park cars near the school.
Объяснение:
Прости, не нашла куда приткнуть can't, но с теми словами, которые я использовала тоже верно. Надеюсь помогла тебе. Удачи)