Quedé estupefacto cuando vi la cantidad de gente que vino a la manifestación.I was astonished when I saw the number of people that came to the protest.
Mario quedó estupefacto cuando su novia le dijo que era la heredera de una fortuna petrolera.Mario was astonished when his girlfriend told him that she was the heir to an oil fortune.
Los padres se quedaron estupefactos cuando se enteraron de que su hija estaba embarazada.The parents were amazed when they found out their daughter was pregnant.