3 sentences

1. 抗洪期间，政府征调民工加固堤坝。

   kàng​hóng qī​jiān, zhèng​fǔ zhēng​diào mín​gōng jiā​gù dī​bà.

   During the flood control period, the government mobilized workers to reinforce the levees.

   Source: Dong Chinese Dictionary

2. 抗洪战士们正忙着往岸边堆沙袋。

   kàng​hóng zhàn​shì men zhèng máng zhe wǎng àn​biān duī shā​dài.

   The flood fighters are busy stacking sandbags along the riverbank.

   Source: Dong Chinese Dictionary

3. 全连官兵都参加了这次抗洪抢险任务。

   quán lián guān​bīng dōu cān​jiā le zhè cì kàng​hóng qiǎng​xiǎn rèn​wu.

   All officers and soldiers of the company participated in this flood-relief mission.

   Source: Dong Chinese Dictionary