Related Clues:

• "Get this done"
• Terse summons about an exam grade
• Words on an F paper, maybe
• Question asked by someone waving
• Ominous note from a teacher
• 'Make sure that happens'
• Teacher's note accompanying a bad grade, maybe
• Terse written summons
• Note next to a D?
• Note from a teacher (... first 2)
• Worrisome directive from a boss
• Ominous note from the teacher
• Words next to a D-, maybe
• 'We need to talk' note
• 'Now you ___, now you don't'