Interchange Level 3A StudentS Book With

Interchange Is A Four-Level, American English Course That Has Been Used By Over 50 Million Students Worldwide. This Level 3A Student'S Book With Includes Access To An W/ Audio. It Has 16 Units, Four Progress Checks, And A Grammar Plus Section To Ensure Students Receive All The Practice They Need. Inside Each Book Is A Single-Use Code For The With Audio, Which Is Mobile-Friendly And Can Be Used On A Smartphone, Tablet, Or Computer.