Form 8a. Conditionals. Type 2

For practicing: https://www.ego4u.com/en/cram-up/grammar/conditional-sentences/type-2/exercises?02; https://www.ego4u.com/en/cram-up/grammar/conditional-sentences/type-2/exercises; http://www.englisch-hilfen.de/en/exercises/if_clauses/type_2_statements.htm.