How to say in Czech: Their native language is Arabic.

English
native language is
Czech
Jejich rodný jazyk je arabština.
Arabic is a difficult language.
How good is their Arabic?
Their Arabic is getting better.
Their Arabic is very good.
Are they learning Arabic on their own?
Arabic is difficult.
He is learning Arabic.
Is he learning Arabic?
Do you speak Arabic?
I do not speak Arabic.

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