How to say in Czech: We know what they did last year.

English
know what did last year.
Czech
My víme, co dělali minulý rok.
What did they do last year?
What happened last year?
It happened last year.
They know what we did yesterday.
When was the last time they saw each other?
They don’t know what we mean by that.
Get off at the last stop.
I want to apologize for my behaviour last night.
This is the last stop.
They know what we think.

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