This course (single book) is suitable both for classroom use and self-study, thanks to the answer key book (separate book). This book is divided into 30 units and provides material to improve and complete the students" knowledge of Spanish as a foreign language at a higher level. The book includes: a wide range of connectors; periphrastic clauses; comprehensive verb tense analysis; comprehensive conjunction analysis; analysis of the use of pronouns; pronominal and reflexive verb analysis; and, vocabulary and situations by subjects.