How to say in Czech: Are they learning Hungarian on their own?

English
Are learning on their own?
Czech
Oni se učí maďarsky jako samouk?
Are they learning Hungarian?
They are learning Hungarian.
Where did they learn Hungarian?
How good is their Hungarian?
Their Hungarian is getting better.
Their Hungarian is very good.
Their native language is Hungarian.
Are they Hungarian?
They are Hungarian.
They are not Hungarian.

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