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

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

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