Form 11 Conditional 3

https://www.englisch-hilfen.de/en/exercises/if_clauses/type_3_mix2.htm
https://www.ego4u.com/en/cram-up/grammar/conditional-sentences/type-3/exercises?02
https://www.englisch-hilfen.de/en/exercises/if_clauses/type_3_mix4.htm