Réponse :
Bonjour !
4)
a) Sydney is the most expensive city in the country
b) Cooladdi is the smallest town in Australia
c) Bondi Beach is the best surf beach
d) Blue Mountains is the worst place to cycle
5)
a) Have you ever lived in Melbourne ?
b) Surfing has never been cheaper in Australia
c) I haven't tasted Vegemite yet
d) I have already been in a hot air ballon, the first time was last year
e) I have just bought a new surfing board in this shop over there ! I'll need it in an hour