根据对话内容，用恰当的单词、短语或句子补全对话。
A: Hi. Jack. Long time no see! Where have you been?
B: 【小题1】.
A: Why did you go to Beijing for your winter vacation?
B: Because I became a volunteer to help the athletes (运动员) who lived in the Olympic village.
A: Sounds great! 【小题2】 have you been there?
B: About 15 days.
A: What should a volunteer do?
B: As for me. I’m a guide. I helped the foreigners to find their ways and I also introduced Chinese culture to them on the way to the places they want to go.
A: 【小题3】?
B: Because I want them to know more about our great country.
A: 【小题4】 volunteers were there during the Beijing Olympic Games?
B: More than 18,000 volunteers.
A: Would you like to be a volunteer again in the future?
B: 【小题5】. I’m happy when I help others. The world will be more beautiful if we give a hand when others are in trouble.