No translator complete the sentences with the correct possessive adjective: mon, ma, mes, ton, ta, tes, son, sa, ses, notre, nos, votre, vos, leur, or leurs. voilà affiche. (his)

Bonsoir !!!

As you know the possessive adjectives agree in gender & number with the following noun ; with the possessed object and not with the person who possesses as in English

Voilà son affiche.  (his)

 it could be "her", it would still be "son" ..

EXCEPTION  =   affiche is a feminine noun but as it begins with a vowel, you can't say "sa" affiche so it's "son"

when the following noun begins with a vowel or a mute 'h' you won't use 'ma' 'ta' 'sa'  but 'mon' 'ton' son'

singular

mon affiche = my

ton affiche = your (2nd pers. sing.)

notre affiche = our

votre affiche = your  (formal vous)

leur affiche = their (3rd p. sing.)

affiches plural   (des affiches)

mes affiiches

tes affiches

ses affiches

nos affiches

vos affiches

leurs affiches