Ok why does it's late and it's too late have different translations???

like it's late is: il est tard
but it's too late changes to: c'est trop tard

explain s'il vous plait merci!

Which conjunction best completes the sentence?               peux-tu passer au supermarché tu vas chez le coiffeur. a. que b. quand c. ni d. mais

Could anybody translate this into french i would be grateful: imagine being on top of the great wall of china meating all these new people seeing how the locals live.and how's your holiday going in frence? i hope everything is fine,see you soon.

Which of the following is not a regular verb? chanter répondre choisir avoir