Biografía del autor John Hughes is an award-winning ELT author with thirty years? experience of teaching and teacher training. He has worked with learners and teachers from all over the world and is a well-known conference presenter. For National Geographic Learning, he is an author on the course series Life, World English, Third Edition World Link, Fourth Edition, Success with Business, and Total Business. He?s also the author of the methodology title, Critical Thinking in ELT. His website is www.johnhugheselt.com.Nancy Douglas is a teacher, materials writer, and editor who has been in ELT for over twenty years. She has extensive experience working with students from around the world and has co-authored several courses, including the best-selling series World Link and Reading Explorer. She has also edited print and Web-based materials for English language learners as well as professional development courses for teachers.James Morgan is the co-author of Cengage's best-selling series World Link. He has taught English in Japan and worked as an in-house development editor for a major ELT publisher. Since 1998, he has been a freelance writer and editor of English language learning materials, specializing in grammar and video. He believes the way to unlock each student's potential is through materials that are current, engaging, and meaningful. When he is not working at his computer, he enjoys traveling and learning about other cultures.