How to say in Czech: She speaks Dutch fluently.

English
speaks fluently.
Czech
Ona mluví plynně holandsky.
She speaks Dutch.
She speaks Dutch very well.
She speaks only a little Dutch.
Does she speak Dutch?
She does not speak Dutch.
She does not speak Dutch very well.
Does anybody here speak Dutch?
Is she learning Dutch?
Is she learning Dutch on her own?
She is learning Dutch.

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