报告的主题涉及环境政策的最新变化。

The main topic of the report ___concerns recent changes in environmental policy.

她的演讲涉及可再生能源的未来。

Her speech ___concerned the future of renewable energy.

你能说明这封邮件具体涉及什么问题吗？

Could you clarify what specific issue this email ___concerns?