Castilian dialect, Spanish Castellano, a dialect of the Spanish language (q.v.), the basis of modern standard Spanish. Originally the local dialect of Cantabria in north central Spain, Castilian spread to Castile. After the merger of the kingdoms of Castile, Leon, and Aragon in the late 15th century, it became the standard language of all Spain and in the following centuries the language also of Spanish America.
Answer:
1.Mi familia y yo comemos en un restaurante.
2. Teresa debe estudiar en casa.
3. Yo asisto a clases en el centro universitario
4. Esteban escribe cartas en la universidad.
5. Tu lees libros en la biblioteca.
6. Nancy vende libros en la libreria.
The answer is salgo. Hope this helps :)