Drank or Drunk?
“When in doubt about the standard English forms of irregular verbs, [. . .] look up the base form of the verb in the dictionary, which also lists any irregular forms. (If no additional forms are listed in the dictionary, the verb is regular, not irregular. [. . .] Base Form: drink Past Tense: drank Past Participle: drunk” (Hacker, The Bedford Handbook 312-313).