je n'y suis jamais allé(e) avant.
Before is "avant" in French.
"où avoir vous avez été" is how you say "where have you been" in french.
Je viens d'être içi
Before leaving is "avant de partir" in French.
You can say "Cela fait longtemps" to convey the phrase "It has been a long time" in French.
yesterday in French: hier the day before yesterday: avant-hier
The same as before station.
J'ai déjà vu ça
c'est déjà arrivé
Bon apetit
You don't. Your question should be "How do you say 'I should HAVE been a diplomat in French?'" Perhaps you should learn to speak English first.
j'avais déjà vu ҫa