How to say in Czech: He knows what I did last year.

English
knows what did last year.
Czech
On ví, co jsem dělal minulý rok.
What did he do last year?
He knows what I did yesterday.
What happened last year?
He knows what I think.
It happened last year.
He knows what he needs.
I want to apologize for my behaviour last night.
I don’t know what he means by that.
He knows.
He knows her address.

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