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

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

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