I want to say hello to her.

我想和她打个招呼。

Ask the pupil to say Good.

让学生说好的。

It's time to say goodbye now.

现在是时候说再见了。

Ask a pupil to say I'm hungry.

让一个学生说我饿了。

I'm very sad to say goodbye to you.

我很难过要和你说再见。

It is hard for me to say no to cakes.

我很难拒绝蛋糕。

My mum is waving to say goodbye.

妈妈在挥手说再见。

That's easy, wave to say goodbye.

很简单，挥手说再见。

It was almost time to say goodbye.

差不多是时候说再见了。

They have many clean words to say.

她们有很多干净的话要说。