When's Halloween?What do people usually do?(多写几个） What didyo

Halloween is on the night of the 31st of October and is traditionally said to be the time when ghosts and witches can be seen.On Halloween,In the past,people believed the souls of dead people appeared on Halloween.It is now celebrated in the United States,Canada,and the British Isles by children going door to door while wearing costumes and begging treats and playing pranks,saying "trick or treat".