她已经在艺术学院报名参加摄影课程。

She has ___signed ___up for a photography course at the art school.

要加入俱乐部，只需在他们的网站上报名。

To join the club, simply ___sign ___up on their website.

我们应该在截止日期前报名参加马拉松。

We should ___sign ___up for the marathon before the deadline.