present perfect + just, yet , already

http://www.englishexercises.org/makeagame/viewgame.asp?id=3211

http://www.english-grammar-lessons.com/presentperfect/exercise4.swf


http://www.autoenglish.org/gr.presper.i.h

http://eslzone1.tripod.com/grammarinter/_yet.htm


http://perso.wanadoo.es/autoenglish/gr.presper.i.htm

http://www.manythings.org/repeat/

http://www.eflnet.com/grammar/whquestionspresperf.p
http://www.learnenglish.be/gr2_dif2_ex1.htm

http://www.learnenglish.be/gr2_dif2_ex2.htm

http://www.learnenglish.be/gr2_dif2_ex5.htm

http://www.englishpage.com/verbpage/verbs6.h

diversificació present continuous

http://www.englishexercises.org/makeagame/viewgame.asp?id=2357
http://www.kico4u.de/english/uebungen/5klasse/presprofrag.htm
http://www.members.iinet.net.au/~adelegc/listening/my_day/my_day_1.html
http://www.oup.com/elt/global/products/headway/beginner/a_grammar/grammarunit13/hwy_begin_unit13_2/
http://www.members.iinet.net.au/~adelegc/grammar/pres_cont/pres_cont_1.html
http://www.englishexercises.org/makeagame/viewgame.asp?id=2946
http://www.oup.com/elt/global/products/englishfile/elementary/a_grammar/file06/grammar06_d01/
http://inglesnanet.com/grammar/psimcon1.htm

quart diver

http://enjoyenglish.free.fr/english/primaire/concentration/furniture/furniture_.html
http://www.web-books.com/Language/Inter0/Pages/TestS/TSkitch_1.htm?No=0
http://www.eflnet.com/vocab/dictionary/tablewarequiz3.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-25747.php
http://www.learningchocolate.com/node/333?st_lang=en
http://www.learningchocolate.com/node/168?st_lang=en
http://www.learningchocolate.com/node/81?st_lang=en

present perfect asix

http://www.ego4u.com/en/cram-up/grammar/present-perfect-simple/exercises?02
http://www.english-grammar-lessons.com/presentperfectorpastsimple/exercise1.swf

http://www.englishexercises.org/makeagame/viewgame.asp?id=1625
http://www.englishgrammarsecrets.com/presentperfectorpastsimple/exercise4.swf
http://www.english-grammar-lessons.com/presentperfect/exercise2.swf
http://www.english-4u.de/pres_perf_ex4.htm