This book contains more practice to expand your Spanish skills. The Practice Makes Perfect series has helped thousands learn the basics of Spanish, from vocabulary to prepositions, verbs, and beyond. Now this innovative series turns its attention to advanced students of Spanish who have the foundation of good language skills and want to take their knowledge to the next level. To help you evolve your language skills, this book focuses on more sophisticated grammar topics that are essential to constructing longer, more complex sentences. They especially highlight more troublesome areas, such as the correct use of object pronouns.