Padres mean parents, so your parents would call your grandparents "padres".
31. C
32. B
33. A
34. D
35. C
I hope these help!
1. Tu y yo *podemos* ir a una fiesta el viernes
2. Julio y Nacho van a ir a el parque este lunes.
3. Juan va a ir a comer
(Hope it helps)
I think its hipotecar, which in English means mortgage.