ENGLISH VERB TENSE SYSTEM
http://clickonenglish.blogspot.ro/2013/02/english-verb-tense-system.html

ARTICLES
http://www.use-of-english.com/use-of-english-lessons/11-articles-the-a-an-english-grammar

KEYWORD TRANSFORMATION -TENSES
http://www.use-of-english.com/fce-exercises/26-use-of-english-tenses-keyword-transformation-fce
http://www.use-of-english.com/fce-exercises/14-use-of-english-comparatives-sentence-transformation-fce

WORD FORMATION
http://www.use-of-english.com/fce-exercises/18-use-of-english-the-panama-canal-word-formation
http://www.use-of-english.com/fce-exercises/15-use-of-english-word-formation-fce
OPEN CLOZES
http://www.use-of-english.com/browse/4-fce-open-cloze

MULTIPLE CHOICE CLOZE
http://www.use-of-english.com/fce-exercises/16-use-of-english-snow-white-multiple-choice-fce