Possible Clues:

• Words on either side of '___ what ___'
• Words that can precede and follow 'what'
• 'True that'
• Possible reply to 'That so?'
• 'Can this be true?'
• Ending for sinus or senior
• ''True story''
• 'How sweet —!'
• Words that can precede and follow "what"
• Words said before and after 'what'