Present Perfect Simple and Present Perfect Continuous

Try this grammar exercise:

http://learnenglish.britishcouncil.org/en/grammar-exercises/present-perfect-simple-and-present-perfect-continuous

If you want more information about this topic click on:

http://learnenglish.britishcouncil.org/en/grammar-explained/present-perfect-simple-and-present-perfect-continuous

Good work!