Preço Interchange Fifth Intro a Students Book - Cambridge

Interchange Is a Four-level, American English Course That Has Been Used By Over 50 Million Students Worldwide. This Level 1B Student's Book Includes Units 9-16, Four Progress Checks, And a Grammar Plus Section To Ensure That Students Receive All Of The Practice They Need. Inside Each Book Is a Single-use Code For Online Self-study Material. This Gives Access To Videos And Hundreds Of Automatically Graded Exercises, And Works On PCs And Macs. Also Included Is a Single-use Code For The Online Work