How to say in Czech: You know what they need.

English
know what need.
Czech
Ty víš, co potřebují.
They need to go home.
They don’t know what you mean by that.
They know what you did last year.
They know what you did yesterday.
They know what you think.
They don’t know what to do anymore.
They just don’t know what to say.
What do you need?
And you know what?
You know what?

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