To prevent run on sentences, or create pause or hesitation.
No comma needed.
yes
No, as typically people don't pause at that point in a sentence.
no you do not put a comma at the end of a poem
It should be --- Should you go to Greece, or should you go to Kenya?
No.
No comma needed.
yes
no. if but before is a sentence on its on and after but is a sentence on its own then put a comma before but.
yes, you should just like I did there
Generally no, but it may depend on the structure of the sentence.
Put a comma
No, as typically people don't pause at that point in a sentence.
no you do not put a comma at the end of a poem
It should be --- Should you go to Greece, or should you go to Kenya?
No
yes