Teach with confidence, using the world's favorite English course. Interchange is a four-level, American English course that has been used by over 50 million students worldwide. These class audio CDs contain all of the audio for the Intro level Student's Books. This includes Snapshots, Conversations, Grammar Focus, Listening, Pronunciation practice, Word Power, and Reading, all recorded in natural conversational English. | Interchange Intro Class Audio Cds by Jack C. Richards, Audio Book (CD) | Indigo Chapters