Okay the nosotros section will always end in -mos. If its an er or ir verb, it -emos. If it's an ar verb it's amos
Yo always ends in -o
For tu, if it's an er or ir, it ends in -es, if it's ar it ends in -as
I believe the answer is Que. I'm sorry if I'm wrong that sounds right.
Al final ellos salieron a comer un almuerzo en el restaurante