How to say in Czech: My Dutch is getting better.

English
is getting better.
Czech
Moje holandština se zlepšuje.
I do not speak Dutch very well.
You speak Dutch very well.
My Dutch is very good.
How good is your Dutch?
My native language is Dutch.
Dutch is a difficult language.
Dutch is difficult.
He is learning Dutch.
Is he learning Dutch?
Is he learning Dutch on his own?

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