根据对话内容和首字母提示，写出相应的单词。A: Guess What? I'm going to Chiang Mai next week.
B: Wow, sounds l fun! But I believe that April is the hottest month of the year there.
A: Yes, that's true. But there's a fwater festival there from April 13th to 15th.
B: I w to know if it's similar to（与...相似） the Water Festival of the Dai People in Yunnan Province.
A: Yes, I think so. This is the time of the Thai New Year. People go on the streets to throw water at each other.
B: Cool! But w do they do that?
A: Because the new year is a time for c and washing away bad things. Then you'll have good l in the new year.