class 5: possessive adjectives

http://www.myenglishpages.com/site_php_files/grammar-exercise-possessive-adjectives.php#.UuqvprTucpM
http://www.englishexercises.org/makeagame/viewgame.asp?id=1737
http://www.englisch-hilfen.de/en/exercises/pronouns/possessive_determiners.htm
http://www.ego4u.de/de/cram-up/grammar/pronouns/exercises?03
http://www.language-worksheets.com/subject-pronouns-possessive-adjectives-elementary.html
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-47663.php

grade 8: if-clauses type 3

grammar explanation:
https://www.ego4u.de/de/cram-up/grammar/conditional-sentences
http://www.englisch-hilfen.de/grammar/if_typ3.htm

How to do exercises on if-clauses
http://www.englisch-hilfen.de/grammar/if2.htm

exercises on if-clauses type 3
https://www.ego4u.de/de/cram-up/grammar/conditional-sentences/type-3/exercises
https://www.ego4u.de/de/cram-up/grammar/conditional-sentences/type-3/exercises?02
http://www.englisch-hilfen.de/uebungen/if_saetze/typ_3_aussagen.htm
http://online-lernen.levrai.de/englisch/if_saetze_conditional/40_if_saetze_typ_3_uebungen.htm
http://online-lernen.levrai.de/englisch/if_saetze_conditional/43_if_saetze_typ_3_erklaerung.htm

mixed exercises
http://www.englisch-hilfen.de/complex_tests/if_saetze1/index.php
https://www.ego4u.de/de/cram-up/grammar/conditional-sentences/exercises?05
https://www.ego4u.de/de/cram-up/grammar/conditional-sentences/exercises?04
https://www.ego4u.de/de/cram-up/grammar/conditional-sentences/exercises?06
https://www.ego4u.de/de/read-on/countries/usa/tour/new-orleans

grade 6 + 7: mixed grammar

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-7659.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-21135.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-4629.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-7882.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-11890.php
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-2376.php