那位女演员很紧张，因为下一个就轮到她上台了。

The actress was nervous because she was ___on next.

当他们最喜欢的歌手登台时，人群沸腾了。

The crowd went wild when their favourite singer came ___on stage.

演出中我最喜欢的部分是那位喜剧演员出场的时候。

My favourite part of the show was when the comedian came ___on.