How to say in Czech: May I ask why?

English
May I ask why?
Czech
Můžu se zeptat proč?
Why is the door closed?
Why are you asking?
Why didn’t you ask?
Why am I only hearing about it now?
Why don’t I go home?
Why was I late this morning?
Why are they hesitating?
Why are you telling me that?
Why aren’t you answering?
Why can’t you come?

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