How to say in Czech: Do they speak Spanish?

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

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