他们举杯庆祝。

They are toasting ___celebrating.

我们正在庆祝毕业，准备了一个大蛋糕和气球。

We are ___celebrating our graduation with a big cake and balloons.

整个社区都在庆祝这位科学家的杰出贡献。

The whole community is ___celebrating the scientist's outstanding contributions.