join ·phrasal verb

这个游戏我们只需要再多一个玩家——你能说服你姐姐加入吗？

We only need one more player for this game - can you persuade your sister to ___join ___in?

在这段歌词结束时，我们希望每个人都加入合唱。

At the end of this verse, we'd like everyone to ___join ___in with the chorus.

我觉得这个活动很有趣，所以我决定加入。

I found the activity interesting, so I decided to ___join ___in.