How to say in Czech: His Slovenian is very good.

English
is very good.
Czech
Jeho slovinština je velmi dobrá.
I do not speak Slovenian very well.
You speak Slovenian very well.
His Slovenian is getting better.
How good is his Slovenian?
His native language is Slovenian.
Is he learning Slovenian on his own?
He is learning Slovenian.
Is he learning Slovenian?
Slovenian is a difficult language.
Slovenian is difficult.

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