Interchange Level 3
Full Contact with Online Self-Study
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Language for Teaching Secondary (e-Commerce Version)
Touchstone, together with Viewpoint, is a six-level English program based on research from the Cambridge English Corpus.Authors: Jack C. Richards, with Jonathan Hull, with Susan Proctor, Michael McCarthy, Jeanne McCarten, Helen Sandiford, Cambridge English Language AssessmentEnglish Type: American English
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