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<p>Interchange Fourth Edition is a four-level series for adult and young-adult learners of English from the beginning to the high-intermediate level. Interchange Fourth Edition Intro Student's Book with Self-study DVD-ROM and Online Workbook Pack provides additional activities to reinforce what is presented in the Student's Book. The Online Workbook includes activities which correspond to the Student's Book lessons; instant feedback for hundreds of activities; clear, easy-to-follow navigation to support self-study; and simple tools to monitor progress.show more</p>
