Question

Your friends ate some hamburgers last Night en interrogative

Answer 1

Respuesta:

was your friends ate some hamburguers last night?

Explicación:

Answer 2

Respuesta: Were they eating some hamburgers last night?

Explicación:

Se utiliza el "were" porque estamos hablando de algo que ha pasado y ponemos "they" ya que "your friends" se idenifica como "ellos" en plural, aunque tambien podriamos poner....

were your friends eating some hamburgers last night?

que seria basicamente lo mismo