http://www.englishpage.com/verbpage/verbs12.htm
http://www.englishpage.com/verbpage/presentperfect.html
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-10277.php
http://www.curso-ingles.com/ejercicios-test-ingles/present-perfect-past-simple.php
No comments:
Post a Comment