Related Clues:

• 'I'm ___!'
• 'Step aside, I'll do it'
• ''Don't bet ---!''
• Doing what needs to be done
• 'You can bet ___!'
• Self-confident assertion
• "Don't bet ___!"
• 'I'd like to give it a try'
• 'Let me sleep ___'
• Taking action
• Part of the Little Engine's mantra
• Attending to the case
• Words with step or sleep
• Words of confidence
• 'Put a lid --!'