4 Choisissez une des propositions (est-il utile de préciser le genre ou non ?). a. My mother is a (doctor / female doctor). b. When I am 25, I want to be a (nurse / male nurse). c. Betty is my best (friend / female friend). d. Being a woman, I often feel isolated among all my (colleagues/ male colleagues). e. My aunt is a (painter / female painter). f. My sister is a (waiter / waitress).​