The main purpose of these book series is to provide you an impressive and invaluable collection of TOEFL Grammar multiple-choice exercises with answers. This book comprises different items and will take you on a beautiful journey towards improving your English for TOEFL exam. There are three levels of difficulty in my "TOEFL Grammar with Answer Key" series: Beginner, Intermediate and Advanced. Choose the best that suits you and enhance your English knowledge. This book deals with Advanced English level and is the third book of the series. Please keep an eye on further releases. Good luck!