8.V Unit 9 - conditionals
1 http://www.englisch-hilfen.de/en/exercises/if_clauses/multiple_choice4.htm
2 http://www.englisch-hilfen.de/en/exercises/if_clauses/type_3_mix2.htm
3 http://elt.oup.com/student/headway/int/a_grammar/unit09/hwy_int_unit08_2?cc=global&selLanguage=en
4 http://elt.oup.com/student/headway/int/a_grammar/unit09/hwy_int_unit09_2?cc=global&selLanguage=en
5 http://elt.oup.com/student/headway/int/b_vocabulary/unit09/hwy_int_unit08_1?cc=global&selLanguage=en
6 http://elt.oup.com/student/headway/int/b_vocabulary/unit09/hwy_int_unit09_2?cc=global&selLanguage=en