1. But all students are required to take performing arts and sports, and provide a community service.
    但所有的学生都必须修习表演艺术和体育，还要提供社区服务。

2. I hadn't noticed the five men performing at the side of the stage as an introduction to the show.
    我并没注意到舞台那头的五个人，他们在奏着演出的开场乐曲。