The Letter "K" Difficult & Advanced Verbs

The government launched a campaign to ________________ public interest in the national space program.

The sound of the solemn bell seemed to ________________ the end of an era for the small, traditional village.

It's unprofessional to ________________ from the sidelines while your colleagues are trying to have a serious negotiation.

He would constantly ________________ about minor inconveniences and drain the morale of everyone around him.

In modern society, people are taught to speak their own minds and not to _________________ to others.