Related Clues:

• Frat candidate
• Promise to PBS
• Classroom recitation
• Help PBS, e.g.
• 68-Down, for one
• Public TV donation
• Solemn oath
• Would-be frat member
• Promise or pawn
• A promise to pawn?
• Promise solemnly
• Binding promise
• Promise solemnly and formally
• Even a teetotaller may take it
• Promise to be plural on the Border