How to say in Czech: Is she learning Vietnamese?

English
Is learning
Czech
Učí se vietnamsky?
Is she learning Vietnamese on her own?
She is learning Vietnamese.
Where did she learn Vietnamese?
Does she speak Vietnamese?
She does not speak Vietnamese.
She does not speak Vietnamese very well.
She speaks only a little Vietnamese.
She speaks Vietnamese.
She speaks Vietnamese fluently.
She speaks Vietnamese very well.

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