3 sentences

1. 政府号召大家节约用水。

   zhèng​fǔ hào​zhào dà​jiā jié​yuē yòng shuǐ.

   The government calls on everyone to conserve water.

   Source: Dong Chinese Dictionary

2. 许多年轻人响应国家号召，到基层去工作。

   xǔ​duō nián​qīng​rén xiǎng​yìng guó​jiā hào​zhào, dào jī​céng qù gōng​zuò.

   Many young people responded to the national call to go and work at the grassroots level.

   Source: Dong Chinese Dictionary

3. 他响应号召去下乡，后来政策变了，他才回城。

   tā xiǎng​yìng hào​zhào qù xià​xiāng, hòu​lái zhèng​cè biàn le, tā cái huí​chéng.

   He responded to the call to go to the countryside, and only returned to the city later when the policy changed.

   Source: Dong Chinese Dictionary