Olga's notebook entry: Dec 21, 2010

Hoy estoy bien. He ido al dentista (in this case you dont have to mark the sex of the dentist). No quiero tratarme pero muy no quiero tener dolor. Ahora voy a visitar a los partneres comerciales de mi empresa. Por eso voy a salir del trabajo a las cuatro de la tarde.
Ahora estudio los numeros.
Mañana voy a escribir algunos hechos de historia de Moscu. (Structure "por eso" is used when the next part of the text has relation with before one... in this case, to talk about Moscow's history is not caused to talk about numbers today, so you dont have to use "por eso"... in the other part of the text, this situation was opposite... you was going out to the office at 4pm because was going to meet with commercial partners, so it was correct to use ·"por eso")