How to say in Czech: He is such a lazy boy!

English
is such a
Czech
On je tak líný kluk!
He is trying not to be lazy.
He is such a brave boy!
Does he know this boy?
What is this boy doing here?
Who is this boy?
Why is this boy here?
Does anybody know this boy?
He is young.
He lives there.
Sorry the place is such a mess...

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