"nor did I have finished my reseach" or " nor had I finished my reseach"?
Three weeks before the end of the term, I had not started my paper nor did I have finished my reseach.
Three weeks before the end of the term, I had not started my paper nor had I finished my reseach.

Which setence is correct? Why?

Question

"nor did I have  finished my reseach" or " nor had I  finished my reseach"?
Three weeks before the end of the term, I had not started my paper nor did I have  finished my reseach.
Three weeks before the end of the term, I had not started my paper nor had I  finished my reseach.

Which setence is correct? Why?

Answer

I had neither started my paper nor finished my research
that's the correct structure of the sentence.

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