What is one of the things usually found in the center of a plaza in a spanish speaking country

I think this would be the "Zocalo"

The Zocalo is the base of the Flag, and the national Flag (often very big) is at the center of the plaza in Spanish speaking countries. For example, in Mexico, people refer to this plaza as "Zocalo" for this reason.

7. pedro descansa despues de jugar.8.pedro le gusta ir al colegio.9. predo bañana su perro.10. pedro llega muy cansado a su cuarto y se duerme.

Me gusta nadar en la piscina.