A difference between schools in Nicaragua and Costa Rica is that in Nicaragua it is mandatory to go to school from age 6 to 12, while in Costa Rica you have to go to school from ages 3 to 15. From age 16-18 going to school is not mandatory in Costa Rica.
The nosotros is imos as in ar it is amos and in er it is emos
hope this helps some
Es que al rey no le gusta el chino
Mi tío viaja en el tren que sólo PARA en una ciudad