je dus
tu dus
il dut
nous dûmes
vous dûtes
ils durent
In French, "must have" can be translated as "doit avoir" or "il faut avoir."
doit être
quelqu'un doit le faire [or] quelq'un doit s'en charger
la grandeur du doit
There should be at least one uppercase letter in the password.
"One has to" is an English equivalent of the French phrase On doit. The declarative statement also translates as "One must (need)" or "One owes" according to English contexts. The pronunciation will be "oh dwa" in French.
Elle doit se demander
elle doit être l'amour
You can say "Il a besoin de s'en aller" in French to mean "He needs to go away."
he owes 700 = il doit sept cent...he owes me 700 € = il me doit sept cent euros
"your password must include at least one figure and one letter"
Your password must contain at least one number and one letter.