How to say in Czech: Where did they learn Latvian?

English
Where did learn
Czech
Kde se naučili lotyšsky?
Are they learning Latvian?
Are they learning Latvian on their own?
They are learning Latvian.
Do they speak Latvian?
They do not speak Latvian.
They do not speak Latvian very well.
They speak Latvian.
They speak Latvian fluently.
They speak Latvian very well.
They speak only a little Latvian.

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