各位同学，请安静一下。

Gèwèi tóngxué, qǐng ānjìng yíxià.

Everyone, please be quiet for a moment.

各位家长，请在这里签到。

Gèwèi jiāzhǎng, qǐng zài zhèlǐ qiāndào.

Parents, please sign in here.

各位老师，辛苦了！

Gèwèi lǎoshī, xīnkǔ le!

Dear teachers, thank you for your hard work!