Related Clues:

• Sci-fi's 'Doctor ___'
• Curious kid's query
• ''Horton Hears a ___''
• Word in a motorist's question
• With 34-Across, site of central activity
• ___-to
• Request for instructions
• "Please explain"
• 'Never heard of 'em ...'
• 'Say ___' (pourer's request)
• Abbott’s first baseman
• At the same time as
• "___ convenient"
• "--- dare you!"
• Question about process