his/her/their homework; duties
Solía hacer con mi hija sus deberes de matemáticas.
I used to do my daughter's math homework with her.
Tom hizo sus deberes por sí mismo.
Tom did his homework by himself.
He has abandoned his duties.
Did he finish his homework?
— Das weiße Band - Eine deutsche Kindergeschichte (2009)
Él ya ha terminado sus deberes.
He has already finished his homework.
Todos aquí conocen sus deberes.
Everyone here knows their duties.
Tom no cree que Mary haya hecho sola todos sus deberes.
Tom doesn’t believe Mary did all her homework by herself.
Él estaba abrumado con la pesada carga de sus deberes.
He was overwhelmed with the heavy burden of his duties.
Tom probablemente está haciendo sus deberes todavía.
Tom is probably still doing his homework.