Choose the word or phrase among A, B, C or D that best fits the FOURTH (4) blank space in the following passage. The tradition of dressing (1)………….. costume for Halloween has both European and Celtic roots. Hundreds of years ago, winter was an uncertain and (2)………time. Food supplies often ran low and, for the many people afraid of the dark, the short days of winter were full of constant worry. On Halloween, when is was believed that (3)………. came back to the earthly world, people thought that they would encounter ghosts if they left their homes. To avoid being recognized by these ghosts, people would wear (4)……… when they left their homes after dark so that the ghosts would mistake them for fellow spirits. On Halloween, to keep ghosts away from their houses, people would (5)……… bowls of food outside their homes to appease the ghosts and prevent them from attempting to enter. (Chỉ được chọn 1 đán án) A.hats B.caps C.scarfs D.marks