The Touchstone Workbook provides follow-up exercises for each lesson in the Student's Book, allowing for a thorough practice of new vocabulary, structures, and conversation strategies and providing extra reading and writing activities. A progress chart at the end of each unit helps students evaluate their progress and plan further study. Workbook 4B contains units 7-12, the second half of the complete Level 4 Workbook. Это и многое другое вы найдете в книге Touchstone 4 Workbook B (Michael J. McCarthy, Jeanne McCarten, Helen Sandiford)