9 sentences

1. 老师让班长把作业收齐。

   lǎo​shī ràng bān​zhǎng bǎ zuò​yè shōu qí.

   The teacher asked the class monitor to collect the homework.

   Source: Dong Chinese Dictionary

2. 老师走进教室，班长喊道：“起立！”

   lǎo​shī zǒu​jìn jiào​shì, bān​zhǎng hǎn​dào:“ qǐ​lì!”

   The teacher walked into the classroom, and the class monitor shouted, 'Stand up!'

   Source: Dong Chinese Dictionary

3. 他被选为班长。

   tā bèi xuǎn wéi bān​zhǎng.

   He was elected class monitor.

   Source: Dong Chinese Dictionary

4. 排在最前头的那个学生是班长。

   pái zài zuì qián​tou de nà gè xué​sheng shì bān​zhǎng.

   The student at the very front of the line is the class monitor.

   Source: Dong Chinese Dictionary

5. 大家一致推选他担任我们的班长。

   dà​jiā yī​zhì tuī​xuǎn tā dān​rèn wǒ​men de bān​zhǎng.

   Everyone unanimously elected him as our class monitor.

   Source: Dong Chinese Dictionary

6. 在这次班委选举中，大家举他当班长。

   zài zhè cì bān​wěi xuǎn​jǔ zhōng, dà​jiā jǔ tā dāng bān​zhǎng.

   In this class committee election, everyone elected him to be the class monitor.

   Source: Dong Chinese Dictionary

7. 班长向士兵们喊道：“立正！”

   bān​zhǎng xiàng shì​bīng men hǎn​dào:“ lì​zhèng!”

   The squad leader shouted to the soldiers, 'Attention!'

   Source: Dong Chinese Dictionary

8. 班长带领全班战士参加了军事演习。

   bān​zhǎng dài​lǐng quán bān zhàn​shì cān​jiā le jūn​shì yǎn​xí.

   The squad leader led all the soldiers in a military exercise.

   Source: Dong Chinese Dictionary

9. 他在工厂里担任生产班长。

   tā zài gōng​chǎng lǐ dān​rèn shēng​chǎn bān​zhǎng.

   He serves as a production shift leader in the factory.

   Source: Dong Chinese Dictionary