It is high time that parents, educators and the government made combined efforts to put an end to this situation.
　　It is high time that broadcasters provided public messages on TV screens that would warn viewers about the potentially harmful effects of viewing televised violence.
　　From now on, let us take actions to heal our globe, and clean up our environment! Some day, peoples in all nations will be enveloped with the blue sky and green lands. It is prime time that we put considerable / great/ special emphasis on …