_____ that women before, but I can't remember where.
_____ that women before, but I can't remember where.
Explanation
I have seen that woman before, but I can't remember where.
میں نے اس عورت کو پہلے بھی دیکھا ہے، لیکن مجھے یاد نہیں کہ کہاں ہے۔
This uses the present perfect tense to indicate a past experience with relevance to the present.