How to say in Czech: Do they speak Estonian?

English
Do speak
Czech
Mluví estonsky?
They do not speak Estonian.
They do not speak Estonian very well.
They speak Estonian.
They speak Estonian fluently.
They speak Estonian very well.
They speak only a little Estonian.
Does anybody here speak Estonian?
Where did they learn Estonian?
Are they learning Estonian?
Are they learning Estonian on their own?

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