Réponse :
a : we (nous pour my parents and I mes parents et moi) puis mine
b : he (pour Bob), they (the four children) him (bob)
c : it (that series) they (the characthers) her (Mom) yours (mother)
d: hers (my sister's house), they (my brother and my sister.)
Explications :
revois les pronoms en anglais (sujets, compléments et posessifs.)