IV/WORD FORM Write the correct form of the given words. 17. The Thames Festival is an annual (CELEBRATE) of the River Thames in (PARTICIPATE) to enter round (DECORATE) and put them this race. for another year. (PREPARE) for Diwali Festival begin several weeks before the first day of London with many exciting events and talks. 18. We will choose five 19. Lisa takes down the 20. Diwali. People clean their houses, put up decorations and light the lanterns. the next away