(Ayúdenme con la respuesta correcta, es de Senati, no es "had helped" ni "has had" porque ya lo intente antes)
1) Graphic designers……………to design a campaign for Coca Cola.
- Have helped
- Had helped
- Has help
- Has had
- Had had
1) Graphic designers……………to design a campaign for Coca Cola.
- Have helped
- Had helped
- Has help
- Has had
- Had had
Respuesta:
Es Have helped, porque "graphic designers" son "they" por lo que al verbo no se le agrega s, es decir, queda en have y have NO va en pasado porque en esta oración cumple la función de auxiliar...