Why don't you ring up Simon and ask him to the party?

你为什么不给西蒙打电话请他来参加聚会呢

Could you ring up the doctor?

您可以打电话给医生吗？

I'll ring up in a minute.

我马上就打电话。

Please ring up our English teacher soon.

请尽块给我们英语老师打电话。

I'll ring up again.

我回头再打电话。

I should ring up her mother.

我应该给她妈妈打个电话。