How to say in Czech: Are you learning Bulgarian?

English
Are learning
Czech
Učíš se bulharsky?
Are you learning Bulgarian on your own?
They are learning Bulgarian.
Where did you learn Bulgarian?
Are you Bulgarian?
Do you speak Bulgarian?
You speak Bulgarian very well.
How do you say that in Bulgarian?
You do not speak Bulgarian very well.
They are Bulgarian.
They are not Bulgarian.

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