FUENTE:

http://www.cambridgeenglish.org/exams-and-tests/key/exam-format/

https://www.flo-joe.co.uk/keyenglishtest/index.htm

https://www.examenglish.com/KET/index.html

​

TEST YOUR LEVEL: 

https://www.examenglish.com/leveltest/index.php

​