根据第四段尾句“It was different, but one thing stayed very much the same — I felt at home again and we felt like a family again”可知，作者和朋友们在一起，感觉又回到了家，感觉又像一家人了。据此可知，文章中提及作者和朋友在爱尔兰和巴塞罗那的经历旨在说明和朋友待在一起能让人找到家的感觉，故选C项。

4．Which of the following can be the best title for the text?

A．New Year's Celebration: How?

B．True Friendship: What?

C．Living Abroad: Comfortable or Complicated?

D．Change：Plan it or Make it?

解析：A　考查标题归纳。通读全文可知，文章主要讲述了作者由于常年旅居在国外，对于庆祝新年和新年计划有着不同的思考：有朋友的地方就有家的感觉，变化着的生活不需要新年计划，故A项最适合作文章标题。