他呼吁叛军停止战斗。

He ___called ___on the rebels to stop fighting.

在广告中，你呼吁当地居民帮助清理环境。

In the advertisement, you ___called ___on local residents to help clean up the environment.

联合国呼吁所有国家减少碳排放。

The United Nations ___called ___on all countries to reduce carbon emissions.