A) Future Simple or Present Simple If you __(to find) a horseshoe, it (to bring) good luck to you.
If you ___ (to drop) a spoon, a baby ___ (to come) soon.
b)Future Simple or Future-in-the-Past
It’s cold and windy today. Put on your warm coat or else you ___ (to catch) a cold. My mother warned me that I (to catch) a cold if I didn’t put on warm clothes. In my childhood I didn’t think that I (to be) a teacher.
c)Present Simple or Present Progressive
We must be off. It (to get) dark. Kate is a vegetarian. She__ not (to eat) meat. My mother (to see) the headmaster tomorrow.
d)Past Simple or Past Progressive
(to snow) when you came in? How many people (to die) in WWII? He (to lose) his wallet on the train.