完成对话 根据上下文和你的实际情况把下面的对话补充完整。
A: Hi, David. _____________________________?
B: Brazil. I dream to watch the World Cup.
A: Excuse me, but what is it?
B: It’s the most important football event all over the world.
A: I know little about football. __________________________?
B: It is held every four years，and it usually lasts for a month. This is the 20th World Cup.
A: ______________________?
B: About ten days. We’ll be back after the final game. By the way, how will you spend your summer vacation?
A: I plan to volunteer in a summer-reading program.
B: What are you going to do there?
A: _________________________.
B: Sounds interesting and meaningful. Have fun!
A: ________________________!