Interchange Level 1 Class Audio CDs - 3 - Interchange Fourth Edition Author:Jack C. Richards Interchange Fourth Edition is a four-level series for adult and young-adult learners of English from the beginning to the high-intermediate level. Class Audio CDs, Level 1 include the Snapshots, Conversations, Grammar Focus frames, listening activities, Pronunciation practice, Word Power, and Readings sections of the Student's Book, all recorde... more »d in natural conversational English.« less