How to say in Czech: Do they speak Slovenian?

English
Do speak
Czech
Mluví slovinsky?
They do not speak Slovenian.
They do not speak Slovenian very well.
They speak only a little Slovenian.
They speak Slovenian.
They speak Slovenian fluently.
They speak Slovenian very well.
Does anybody here speak Slovenian?
Where did they learn Slovenian?
Are they learning Slovenian?
Are they learning Slovenian on their own?

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