Conditionals revision

http://www.englisch-hilfen.de/en/exercises/if_clauses/mix.htm

http://www.englisch-hilfen.de/en/exercises/if_clauses/mix3.htm

http://www.englisch-hilfen.de/en/exercises/if_clauses/mix4.htm

http://www.englisch-hilfen.de/en/exercises/if_clauses/type_3_mix4.htm

http://www.perfect-english-grammar.com/second-conditional-exercise-1.html

http://www.perfect-english-grammar.com/third-conditional-exercise-1.html