I am really confused about this sentence. I just hope I would be helped over here. I discussed this question with one of my friends who is also an English teacher.
What would you do if it _______on your wedding day.
1 - rains.
I selected the option ( 1 ). My friend told me that you have to use "rained" because "would" is used over here. After that I shared my remarks with him. I said to him, "We will use 'rains' because this sentence matches with first conditional sentence. It will be " rains ". I said we can use " would " instead of "will". He asked me the reason. I said it is better to use " would" instead of "will" in present day English. Now, I am actually confused that he is not agreed to my remarks. Let's see how I am being helped here.