AdvancedSpanishGrammar. Answer keys included It contains 18 units of reference, selected among those that present more difficulties to the student: Basics of syntax, The verb, Personal pronouns, Definite and Undefinite articles, Prepositions, etc, showed in a simple way and with a great variety of activities. It includes several complementary consultation appendixes: Link and conjuction index, verbal correspondences, verbal conjugation, use of prepositions ... With activities answerkeys. It shows different samples of current and authentic language. It includes the practice of more than a hundred idiomatic expressions. It can be used as a class textbook or self-learning book. It is an invaluable help to prepare the Instituto Cervantes DELE C1 exam.