Possible Clues:

• "— on first?"
• '___ next?'
• '-- on first?'
• Villagers below the Grinch's cave
• "___ there?" (part of a knock-knock joke)
• Grinch victims
• "___ there?"
• '___ calling?'
• Title word of an Abbott and Costello routine
• Eurythmics "___ That Girl"