EXERCISES IF-CLAUSE TYPE I (1):

https://www.englisch-hilfen.de/uebungen/if_saetze/typ_1_aussagen.htm

https://www.ego4u.com/en/cram-up/grammar/conditional-sentences/type-1/exercises?02

EXERCISES IF-CLAUSE TYPE II (2):

https://www.englisch-hilfen.de/uebungen/if_saetze/typ_2_aussagen.htm

https://agendaweb.org/verbs/conditional-second-exercises.html

https://www.ego4u.com/en/cram-up/grammar/conditional-sentences/type-2/exercises?02