Açıklama
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. This Intro Level Full Contact B includes the second half of the Student's Book, Workbook, video activity sheets, and online self-study. It has units 9-16, four progress checks, and a Grammar Plus section to ensure that students receive all of the practice they need.