McCarthy M., McCarten J., Sandiford H. Touchstone 4. Class Audio CD 1 and 2

2nd Edition.
Cambridge, Cambridge University Press - 2014
ISBN: 9781107612723
Part 2
Touchstone, together with Viewpoint, is a six-level English program based on research from the Cambridge English Corpus. It presents natural language in authentic contexts, and explicitly develops conversation strategies so learners speak with fluency and confidence.
Touchstone is a fully-flexible program with proven results. With an abundance of print and digital options you can choose the best way to deliver the course to your students: print, online, or a blend of the two.