Halloween is a holiday celebrated on October 31. By tradition， Halloween begins after sunset. Long ago， people believed that witches gathered together and ghosts roamed the world on Halloween. Today， most people no longer believe in ghosts and witches. But these supernatural beings are still a part of Halloween.
    The colors black and orange are also a part of Halloween. Black is a symbol for night and orange is the color of pumpkins. A jack-o'-lantern is a hollowed-out pumpkin with a face carved on one side. Candles are usually placed inside， giving the face a spooky glow.