[Xinfu]

My sentence:

-When will be the last day I will see/will be seeing/am seeing/see you?

Which tense can be used and which wrong?

I am not sure, because it does not sound right to have many WILLs in one single sentence, and my teacher told me this is wrong:

-He would follow me wherever I would go.

Because we can't have two WOULDs, do you agree?