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

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

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