Answer:
Tienes.
Explanation:
Tú ________tienes_____________ cinco clases.
....
I think it's nadar because "va al mar" means he is going to the sea. Therefore, he would be going to swim.
I believe it's Voy, because that is the "I" or "Yo" form of the word "ir", meaning "to go".
Where are you going to eat?
(I am going to) The restaurant.
¿Adónde vas para comer?
Voy al restaurante.
The only one I could figure out was TOI which is tío