阅读下面材料，在空白处填入适当的词或用所给的词的适当形式填空。
A:      a hot day !
B: Yes, it’s quite hot. .I thought it would be cooler. So I came here  ( spend )my holiday.
A: Well. The temperature in Harbin changes a lot. During the daytime it’s hot but at night it’s much  (cool).  The temperature from June to August is about 25℃-33℃.
B: Really? But the temperature in my hometown changes a little. What   the weather in winter?
A: It often snows and it’s very cold. The lowest temperature is usually below zero at night. So we have the Ice and Snow Festival.
B: The Ice and Snow Festival? Could you tell me something about it?
A: Of course. It’s    (  hold ) in the winter which started from 1985. Today Harbin has become very famous in the world because of the festival. We are proud of it.  Now the festival has become a symbol of Harbin .
B: Great! Thank you for     (tell) me so much.  I think people in Harbin work hard for the festival, do you think so?
A: Yeah. They work hard day by day. Then more trees and grass are being planted. I thought it would be cooler. We are doing our best to make our city more beautiful. Would you like to travel to Harbin in winter?
B: Yes, I’d like to. I hope we will have a good time.