How to say in Czech: They do not know.

English
do not know.
Czech
Oni nevědí.
They do not know her.
They do not know her address.
They do not know how they feel.
They do not care.
Do they know each other?
Do they know her address?
Do they know Miss Nováková?
Do they know this boy?
He knows what they did last year.
He knows what they did yesterday.

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