Possible Clues:

• '...could ___ fat'
• 'Jack Sprat could -- fat ...'
• ''Jack Sprat could ___ . . .''
• "Jack Sprat could ___ fat"
• 'His wife could ___ lean'
• ''Jack Sprat could ___ fat''
• "... could __ lean"
• "Jack Sprat could ___ ..."
• "... could __ fat"
• "... Sprat could ---..."