
- http://www.hueber.de/shared/uebungen/schritte-international/fset.php?Volume=2&Lection=1&Exercise=1&SubExercise=1&ExerciseUrl=schr2intL08ex1.htm
- http://www.hueber.es/shared/uebungen/deutschcom/fset.php?Volume=1&Lection=17&Exercise=1&SubExercise=1&ExerciseUrl=ddc1L17ex01.htm
No hay comentarios:
Publicar un comentario