• must must not
     Help
  • check the weather when you go sailing
    You must check the weather when you go sailing.
  • surf when there are big waves
    You mustn't surf when there are big waves.
  • skateboard on the pavement
    You must skateboard on the pavement.
  • Unlock this slideshow and over 4 million more with Baamboozle+
    Try slideshows
  • Your experience on this site will be improved by allowing cookies.