Related Clues:

• Bathtub problem
• Water level indicator
• Eggs ___ easy
• Partner of ''done with''
• ''Your turn,'' in radiospeak
• Academic challenge
• Bathtub stain
• Class act
• CBer's ''your turn''
• In command of
• Annette of 'Smallville'
• Eggs order
• Put through the paces
• Take it to make the grade
• Measure of skill