How to say in Czech: Are they from here?

English
Are from here?
Czech
Oni jsou odsud?
Do they live here?
They live here.
I am here with friends.
They are from here.
They are not from here.
Are they alone here?
They are alone here.
They are not alone here.
How long have they been here?
How long have they been living here?

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.