Touchstone is an innovative four-level American English series for adult and young-adult learners of English. It draws on extensive research into the Cambridge International Corpus of North American English: a large database of everyday conversations and texts that shows how people actually use English.
This video introduces the Touchstone Arcade, a set of free online activities and exercises that accompany the course. You can visit the Arcade at http://www.cambridge.org/touchstonearcade and find out more about the course at http://www.cambridge.org/elt/touchstone/.
I'm studying module 4 now
but I don't have the CD where can I get it
and is there any web site can give more explanations about the Grammars of book
vanilla1m 2 years ago