Preparation material for the CILS UNO Certification (Intermediate level B1) + Audio CD and keys for all activities.
Book with 10 original preparation tests for Celi 2, B1 level, with CD and solutions at the end of the book.
Book with 10 original preparation tests for Celi 3, B2 level, with CD and solutions at the end of the book.
Book for the preparation of the Celi 4 Certification (advanced level C1) + Audio CD and keys for all activities.