Possible Clues:

• Sullen kid desperately needing training
• With no specific training
• Lacking expertise
• Not requiring special training, a Parisian's got rid of
• Requiring no special training
• Lacking professional expertise
• Little cakes topped and iced with no training necessary
• Clumsy German tribesmen losing leader, murdered
• United Nations were practised but not specially trained
• Without a train, perhaps, the sun is hidden and dead