How to say in Czech: How good is her Ukrainian?

English
How good is
Czech
Jak dobře umí ukrajinsky?
Her Ukrainian is getting better.
Her Ukrainian is very good.
Her native language is Ukrainian.
Is she learning Ukrainian on her own?
How do you say that in Ukrainian?
I do not speak Ukrainian very well.
You speak Ukrainian very well.
He is learning Ukrainian.
He is not Ukrainian.
He is Ukrainian.

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