How to say in Czech: He speaks Slovenian fluently.

English
speaks fluently.
Czech
On mluví plynně slovinsky.
He speaks only a little Slovenian.
He speaks Slovenian.
He speaks Slovenian very well.
Does he speak Slovenian?
He does not speak Slovenian.
He does not speak Slovenian very well.
Does anybody here speak Slovenian?
He is learning Slovenian.
Is he learning Slovenian?
Is he learning Slovenian on his own?

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