三段式短文结构 — 英语填空题

一篇三段式短文主张"大学应鼓励学生参加志愿服务"。第二段中，作者先给出理由"志愿服务能提高沟通能力"，随后举例"许多同学在社区服务后更敢于公开表达"。为使理由与例子衔接自然，空格处应填入的衔接词是：Volunteering improves students' communication skills; ___ , many students become more confident in public speaking after serving their communities.