How to say in Czech: Is he learning Latvian?

English
Is learning
Czech
Učí se lotyšsky?
He is learning Latvian.
Is he learning Latvian on his own?
Where did he learn Latvian?
Does he speak Latvian?
He does not speak Latvian.
He does not speak Latvian very well.
He speaks Latvian.
He speaks Latvian fluently.
He speaks Latvian very well.
He speaks only a little Latvian.

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