How to say in Czech: Are they alive?

English
Are alive?
Czech
Jsou naživu?
Are they still alive?
They are still alive.
We are happy to be alive.
He was buried alive.
Is he alive or dead?
Is your father still alive?
They live there.
They didn’t write that.
Are they ready?
They are going home.

Czech phrasebook and translator with tens of thousands of sentences translated by humans. Czechslator is being developed by Michal Měchura. CREDITS Czechslator's sentence generation engine is partially based on Grammatical Framework. All Czech pronunciation is computer-generated using Microsoft Azure Text to Speech. When Czechslator cannot find a translation in its own database, it looks in the PanLex dictionary or obtains a machine translation from Microsoft Translator. PRIVACY Czechslator does not save any cookies in your web browser and does not collect personally identifiable data. Czechslator uses StatCounter for traffic analysis, configured not to save any cookies in your web browser and not to collect any personally identifiable data.