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

English
native language is
Czech
Jeho rodný jazyk je lotyština.
Latvian is a difficult language.
His Latvian is getting better.
His Latvian is very good.
How good is his Latvian?
Is he learning Latvian on his own?
He is learning Latvian.
Is he learning Latvian?
Latvian is difficult.
Do you speak Latvian?
I do not speak Latvian.

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