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

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

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