Réponse:

a) We usually buy our groceries at the supermarket.

b) An average New yorker pay per month for his or her apartment.

c) Because they are expensive, some people don't find cities attractive.

d) New York, Los Angeles and other big U.S cities often seem like cities of extremes. (pas sûr à vérifier)

e) My dad doesn't want to live in Harlem.