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PLEASE HELP, 3 Spanish questions!!!

Based on what we learned, fill in the formula below.

1.) ___________ cuando ___________

preterite, preterite
preterite, imperfect
imperfect, imperfect
imperfect, preterite

2.)
Based on what we learned, fill in the formula below.

2.) ___________ mientras ___________

imperfect, preterite
imperfect, imperfect
preterite, preterite
preterite, imperfect

3.) Ayer, yo ___________, _________, y ___________.

preterite, preterite, preterite
imperfect, imperfect, imperfect
all of the above
imperfect, preterite, imperfect