How to say in Czech: How old is he?

English
How old is
Czech
Kolik je mu let?
He is old.
How old is your cat?
He is old enough to stand on his own feet.
He is not old enough.
He is not old enough for her.
He is not old enough for that.
He is not too old for her yet.
He is not too old for that yet.
He is not too old yet.
He is old enough to make his own decisions.

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