How to say in Czech: His native language is German.

English
native language is
Czech
Jeho rodný jazyk je němčina.
What is his native language?
German is a difficult language.
His German is getting better.
His German is very good.
How good is his German?
Is he learning German on his own?
German is difficult.
He is German.
He is learning German.
He is not German.

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