组长每天检查大家的作业。

Zǔzhǎng měitiān jiǎnchá dàjiā de zuòyè.

The group leader checks everyone’s homework every day.

你们这组的组长是谁？

Nǐmen zhè zǔ de zǔzhǎng shì shéi?

Who is the group leader of your group?

组长负责告诉老师我们组的想法。

Zǔzhǎng fùzé gàosu lǎoshī wǒmen zǔ de xiǎngfǎ.

The group leader is responsible for telling the teacher our group’s ideas.