How would one say "They must not close the door"? This was my answer but it was rejected.
Ili devas ne fermi la pordon, or ili ne fermu la pordon (though I don't know if duo would take the second one).
It should, if we were to translate the original sentence. :)
And another possibility: Ili ne rajtas fermi la pordon.
My question as well, dankon!
can anyone confirm this?
"Do not have to" means it's optional.
"Must not" means it should not happen.
I put "They should not close the door," how is this wrong?
Should in Esperanto is devus (the conditional form of devi, so that would be ili ne devus fermi la pordon.
It should be "they do not have to close the door" - it's optional, not that they should not, but that they do not have to.
Ili ne bezonas fermi la pordon?
It's devi + verb phrase, bezoni + noun phrase. Just like the French it was taken from.