How to say in Czech: Who opened the door?

English
Who the
Czech
Kdo otevřel dveře?
Can I open the door?
Why is the door open?
Open the door please.
The door is open.
My door is always open.
Close the door when you leave.
It is the fifth door on the left.
This door goes into the garden.
Where does this door go?
The windows are open.

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