Exercises online

THE PASSIVE

http://www.bbc.co.uk/worldservice/learningenglish/flatmates/episode164/index.shtml

http://esl.about.com/library/quiz/blgrquiz_passive1.htm

http://learnenglish.britishcouncil.org/en/grammar-exercises/passives

http://www.ego4u.com/en/cram-up/grammar/passive

MAKE AND DO

http://www.bbc.co.uk/worldservice/learningenglish/flatmates/episode113/languagepoint.shtml

THE FIRST CONDITIONAL

http://www.bbc.co.uk/worldservice/learningenglish/flatmates/episode24/index.shtml

THE SECOND CONDITONAL

http://www.bbc.co.uk/worldservice/learningenglish/flatmates/2009/04/090331_fm_192_episode.shtml