How to say in Czech: They speak Norwegian fluently.

English
speak fluently.
Czech
Oni mluví plynně norsky.
Do they speak Norwegian?
They do not speak Norwegian.
They do not speak Norwegian very well.
They speak Norwegian.
They speak Norwegian very well.
They speak only a little Norwegian.
Does anybody here speak Norwegian?
Are they learning Norwegian?
Are they learning Norwegian on their own?
Are they Norwegian?

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.