Answer:
Yo no sabía que tú estabas. Si no, yo _hago__ papas a la huancaína.
I didn't know you were there. If not, I'll _make__ potatoes a la huancaína.
Sorry for the confusion!! I hope this helps!!
1. vosotros
2.saber
Use google translate for the rest
Hola buenos dias me llamo (your name)
