Respuesta :
Afirmacion: Mario traveled to Australia at 20 years old.
Negativo: Mario didn't travel to Australia at 20 years old.
Interrogativo: Did Mario travel to Australia at 20 years old?
Afirmacion: Mario traveled to Australia at 20 years old.
Negativo: Mario didn't travel to Australia at 20 years old.
Interrogativo: Did Mario travel to Australia at 20 years old?