7 sentences

1. 谁今天晚上在办公室值班？

   shéi jīn​tiān wǎn​shang zài bàn​gōng​shì zhí​bān?

   Who is on duty in the office tonight?

   Source: Dong Chinese Dictionary

2. 我今晚值班。

   wǒ jīn​wǎn zhí​bān.

   I'm on duty tonight.

   Source: OpenSubtitles

3. 我正在值班。

   wǒ zhèng​zài zhí​bān.

   I'm on duty.

   Source: OpenSubtitles

4. 今天谁值班？

   jīn​tiān shéi zhí​bān?

   Who's on duty today?

   Source: OpenSubtitles

5. 谁在值班？

   shéi zài zhí​bān?

   Who is on duty?

   Source: OpenSubtitles

6. 值班人员每晚都要绕着仓库巡三遍。

   zhí​bān rén​yuán měi wǎn dōu yào rào zhe cāng​kù xún sān biàn.

   The duty officer patrols around the warehouse three times every night.

   Source: Dong Chinese Dictionary

7. 几位医生轮番值班，确保病人得到全天候照顾。

   jǐ wèi yī​shēng lún​fān zhí​bān, què​bǎo bìng​rén dé​dào quán​tiān​hòu zhào​gu.

   Several doctors took turns on duty to ensure the patient received round-the-clock care.

   Source: Dong Chinese Dictionary