How to say in Czech: They speak only a little Bulgarian.

English
speak only a little
Czech
Oni mluví jen trochu bulharsky.
Do they speak Bulgarian?
They do not speak Bulgarian.
They do not speak Bulgarian very well.
They speak Bulgarian.
They speak Bulgarian fluently.
They speak Bulgarian very well.
Does anybody here speak Bulgarian?
Are they Bulgarian?
Are they learning Bulgarian?
Are they learning Bulgarian on their own?

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