Possible Clues:

• Aware of son acting badly
• Informed company worker reversed pipe plugs
• Knowing conga isn't unusual
• Clued-up company worker is about to celebrate retiring
• Aware that tooth isn't an alternative
• Being aware (of)
• Engineer can go -- isn't aware
• Aware of insignificant worker, maybe a worker covering bad practice up
• Knowledgeable about religion at last, agnostic is converted
• Having knowledge or understanding