How to say in Czech: I know what he did last year.

English
know what did last year.
Czech
Já vím, co dělal minulý rok.
What did he do last year?
What happened last year?
It happened last year.
He knows what I did yesterday.
I want to apologize for my behaviour last night.
I don’t know what he means by that.
Get off at the last stop.
When was the last time we saw each other?
This is the last stop.
He doesn’t know what to do anymore.

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