Bonjour
C'est le present perfect qui doit être utilisé.
have (au présent) + participe passé
Je ne sais pas si tu as appris le present perfect continuous
have (au présent) + been + V-ing...
Je te mets donc les 2 solutions...
1- We have lived / have been living in Sydney since 2001.
2- Liam has worked / has been working in Melbourne since he was 24 years old.
3- Liam's parents have known each other for a long time.
4- Alice's family has been in Australia for more than a century.
-
FOR ==> pour une durée
SINCE ==> point de départ
-
bonne fin de journée ☺☺☺