未能按时提交报告导致了项目延误。
___Failure ___to submit the report on time led to a delay in the project.
调查的重点是他未能将风险告知团队。
The investigation focused on his ___failure ___to inform the team about the risks.
未能遵守安全规定将导致严厉处罚。
___Failure ___to comply with safety regulations will result in serious penalties.