We would like to express our sincere appreciation to all of those people who have helped to shape this book. First and foremost, we would like to thank all Beginner, Elementary, Prep and Pre-intermediate Group test writers between 2000 and 2005. We also owe a special debt to Robert West, who meticulously proofread and edited the material in the book. We would also like to thank Steve Riva, Beth Dogan, Gary Conlan and Patricia Bilikmcn for their invaluable proofreading. We also thank Nurcihan Kank, who formatted the material and Umut Kahraman, who created a software program that enabled us to prepare the vocabulary tasks.