IV. Write the correct form of the words in brackets.
17. Last year, I participated in one of the Scottish dancing __________. I didn’t win, but I enjoyed myself a lot. (COMPETE)

18. During the Chiang Mai Flower Festival, __________ of the parade often hand out flowers to the spectators along the street. (PARTICIPATE)

19. __________ for Diwali Festival begin several weeks before the first day of Diwali. People clean their houses, put up decorations and light the lanterns. (PREPARE)

20. Last year on May Day, we wore our __________ costumes and danced around the Maypole. (COLOUR)