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. 小题1:_____________________________? 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. 小题2:__________________________? B: It is held every four years,and it usually lasts for a month. This is the 20th World Cup. A: 小题3:______________________? 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: 小题4:_________________________. B: Sounds interesting and meaningful. Have fun! A: 小题5:________________________!