Revision exercises (Units 5 y 7)

Relative clauses:
- exercises and tests http://www.ego4u.com/en/cram-up/grammar/relative-clauses#exercises
http://www.englishexercises.org/makeagame/viewgame.asp?id=4219

Conditional sentences:
- types I, II and III: http://www.englisch-hilfen.de/en/exercises/if_clauses/conditions.htm
http://www.englisch-hilfen.de/en/exercises/if_clauses/mix3.htm
http://www.englisch-hilfen.de/en/exercises/if_clauses/multiple_choice2.htm

Ask for the underlined words:
http://schulen.eduhi.at/riedgym/leoc/englisch1/questions2.ht
http://www.english-grammar.at/worksheets/question-negation/qn5.pdf (PDF with answers)
http://www.english-grammar.at/worksheets/question-negation/qn1.pdf (PDF with answers)