- Professorat editor: Maite Domingo
- Professorat editor: Xavier Ortega Rodríguez
- Professorat editor: Sara Pro
- Professorat editor: Montse Sàbat
THIS IS YOUR CHALLENGE: REACH THE SUMMIT TO C2.1
"Measure the height of the mountain when you reach the top. Then you will see how high you are.”
- Professorat editor: Maria Kuzmicheva
- Professorat editor: Jeremy Ottewell
- Professorat editor: Maite Domingo
- Professorat editor: Xavier Ortega Rodríguez
- Professorat editor: Maria Kuzmicheva
- Professorat editor: Montse Sàbat
- Professorat editor: Irene Manero Candel