How to say in Czech: They speak Portuguese very well.

English
speak very well.
Czech
Oni mluví portugalsky velmi dobře.
They do not speak Portuguese very well.
Do they speak Portuguese?
They do not speak Portuguese.
They speak only a little Portuguese.
They speak Portuguese.
They speak Portuguese fluently.
Does anybody here speak Portuguese?
Your Portuguese is very good.
Your Portuguese is getting better.
How good is your Portuguese?

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