GENERAL
http://www.aitech.ac.jp/~iteslj/quizzes/js/
http://www.ego4u.de/de/cram-up/grammar

CONDITIONAL I
http://www.better-english.com/grammar/firstconditional1.htm
http://esl.about.com/library/grammar/blconditionals.htm
http://www.ego4u.de/de/cram-up/grammar/conditional-1-simple

DEFINING RELATIVE CLAUSES WITH ‘WHO’, ‘WHICH’, ‘THAT’
http://smccd.net/accounts/sevas/esl/gramcheck/clauses-2.html
http://www.ego4u.de/de/cram-up/grammar/relative-clauses/exercises?08
http://www.edufind.com/english/grammar/rel2.cfm

GERUND
http://www.chompchomp.com/terms/gerund.htm

PRESENT PERFECT WITH ‘FOR’ & SINCE
http://www.myenglishteacher.net/present_perfect_progressive.html

SOME/ANY & COMPOUNDS
http://www.aitech.ac.jp/~iteslj/quizzes/vm/someanyno.htm!!!!
http://www.polseguera.com/freegrammar/indefinite.htm

SIMPLE PAST & PRESENT PERFECT
http://www.englishpage.com/verbpage/simplepast.html
http://www.englishpage.com/verbpage/verbs6.htm
http://www.englishpage.com/verbpage/verbs5.htm

QUESTION TAGS
http://www.better-english.com/grammar/questiontags.htm
http://www.ego4u.de/de/cram-up/grammar/question-tags/exercises