5 sentences

1. 他正在处理公务。

   tā zhèng​zài chǔ​lǐ gōng​wù.

   He is handling official business.

   Source: Dong Chinese Dictionary

2. 他忙于公务，常常废寝忘飧。

   tā máng​yú gōng​wù, cháng​cháng fèi​qǐn wàng sūn.

   He is so busy with official business that he often neglects his sleep and meals.

   Source: Dong Chinese Dictionary

3. 处理公务时，绝不能掺杂个人私情。

   chǔ​lǐ gōng​wù shí, jué bù néng chān​zá gè​rén sī​qíng.

   One must never mix personal feelings with official business.

   Source: Dong Chinese Dictionary

4. 他处理完紧急公务后，连夜赶回了家中。

   tā chǔ​lǐ wán jǐn​jí gōng​wù hòu, lián​yè gǎn​huí le jiā zhōng.

   After handling urgent official business, he rushed back home overnight.

   Source: Dong Chinese Dictionary

5. 在古代，官员们通常在巳时就开始处理当天的公务了。

   zài gǔ​dài, guān​yuán men tōng​cháng zài sì​shí jiù kāi​shǐ chǔ​lǐ dāng​tiān de gōng​wù le.

   In ancient times, officials usually began handling their daily public duties during the Sishi period (9 a.m. to 11 a.m.).

   Source: Dong Chinese Dictionary