The past perfect tense of drag is"had dragged." Examples: Jack had dragged into the meeting despite my reluctance. Jason had dragged... Learn more about this topic: Past Perfect Tense | Overview & Examples from Chapter 4/ Lesson 15
https://doi.org/10.1075/jlac.1.1.04harHardaker, Claire. 2013. "Uh...not to be nitpicky,,,but...the past tense of drag is dragged, not drug": An overview of trolling strategies. Journal of Language Aggression and Conflict 1(1). 57-86....