How to say in Czech: He is such a stupid person!

English
is such a
Czech
On je tak hloupý člověk!
He is trying not to be stupid.
That’s a stupid question.
That was stupid of you.
Do not do anything stupid!
I find this whole discussion really stupid.
He is such a brave person!
He is not a morning person.
He is young.
He lives there.
Sorry the place is such a mess...

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