Halloween is celebrated on October 31, and many people, including children, dress up in costumes, visit people’s houses, and ask for (21) (B)__________. This is called trick-or-treating. There are other traditions at Halloween. People have parties in their houses. You can dress up in scary costumes for (22) (B)____________, but your costume doesn’t have to be scary. In the USA, many people wear costumes that aren’t (23) (H)________________. People also tell scary stories at Halloween or play games like bobbing for apples. Some people make jack-o’-lanterns, (24) (H)______________pumpkins with candles inside, and put them inside or outside their houses. It’s unclear where this tradition comes from. Some historians believe that in the past, they were used to scary away unwanted visitors or travelers. Jack-o’-lanterns are now chiefly associated with Halloween.