Verbs and Grammar

PP
http://www.ego4u.com/en/cram-up/grammar/present-perfect-simple/exercises

http://www.agendaweb.org/verbs/present_perfect-exercises.html

http://www.englishpage.com/verbpage/presentperfect.html

http://www.anglaisfacile.com/exercices/exercice-anglais-1/exercice-anglais-385.php