Possible Clues:

• "___ never can tell"
• First word of 'The Adventures of Huckleberry Finn'
• "Nice to hear from ___"
• With 39-Across, answer to the question 'Who's the solver of this puzzle?'
• ___ are here
• '-- tell me!'
• Second person to attract attention on centre court
• Word before and after 'yeah'
• Second person involved in family outing
• "I kid ___ not!"