Padres mean parents, so your parents would call your grandparents "padres".
Sea muy fuerte is the answer
Nosotros nos banamos per la manana
It is "va" because the a in va represents he, she, and you (formal). He is going to the pool, so it is 'Mi padre va a la piscina con nosotros.'
Tocas, is the correct answer. Hope this helps!
