Most codes are printed on the inside front cover of your Student’s Book or Workbook.
If you have a physical or digital Cambridge book, your code is likely already waiting for you: activation code cambridge one free
Enter the 16-digit activation code found in your book or email. If you are joining a class, click + Join a class and enter the key provided by your teacher. Troubleshooting & Alternatives ISBN Check: Most codes are printed on the inside front