SOLUTIONS OXFORD UNIVERSITY PRESS
https://elt.oup.com/student/solutions1stedition/int_unit_page/unit9/?cc=ar&selLanguage=en

IMAGINARY SITUATIONS (third type of conditional)
https://elt.oup.com/student/solutions1stedition/int_unit_page/unit7/grammar/exercise2?cc=us&selLanguage=en
http://www.learnenglish-online.com/grammar/tests/3rdconditional.html

IF ONLY / I WISH
http://www.myenglishpages.com/site_php_files/grammar-lesson-if-only.php
http://www.englishexercises.org/makeagame/viewgame.asp?id=5841

HAVE STHG DONE
https://elt.oup.com/student/solutions/int/grammar/grammar_09_012e?cc=ar&selLanguage=en
http://www.english4all.pro.br/intermhavegetdone.htm