全文 The whole conversation, with pinyin and English
刘老师：今天的值日生是志明和美琪。放学以前，请你们把课室打扫干净。
jīn tiān de zhí rì shēng shì zhì míng hé měi qí fàng xué yǐ qián qǐng nǐ men bǎ kè shì dǎ sǎo gān jìng
Mrs Liu, the teacher: Today Zhiming and Meiqi are on class duty. Before school ends, please clean up the classroom.
志明：美琪，工作有擦白板、排椅子和扫地。我们怎么分？
měi qí gōng zuò yǒu cā bái bǎn pái yǐ zi hé sǎo dì wǒ men zěn me fēn
Zhiming: Meiqi, the jobs are wiping the whiteboard, arranging the chairs and sweeping the floor. How shall we split them?
美琪：白板很高，我擦不到上面。你擦白板，我排椅子，好吗？
bái bǎn hěn gāo wǒ cā bu dào shàng miàn nǐ cā bái bǎn wǒ pái yǐ zi hǎo ma
Meiqi: The whiteboard is high and I can't reach the top. You wipe the whiteboard and I'll arrange the chairs, OK?
志明：好。可是扫地最累，谁来扫？
hǎo kě shì sǎo dì zuì lèi shéi lái sǎo
Zhiming: OK. But sweeping is the most tiring. Who's going to sweep?
美琪：我们一人扫一半吧。你扫前面，我扫后面。
wǒ men yì rén sǎo yí bàn ba nǐ sǎo qián miàn wǒ sǎo hòu miàn
Meiqi: Let's each sweep half. You sweep the front and I'll sweep the back.
志明：这样很公平。我们快点开始吧！
zhè yàng hěn gōng píng wǒ men kuài diǎn kāi shǐ ba
Zhiming: That's fair. Let's get started!
刘老师：志明，擦白板以前，先看看上面的字还要不要用。
zhì míng cā bái bǎn yǐ qián xiān kàn kan shàng miàn de zì hái yào bu yào yòng
Mrs Liu, the teacher: Zhiming, before you wipe the whiteboard, first check whether the writing on it is still needed.
志明：刘老师，这些是明天的功课，要留着吗？
liú lǎo shī zhè xiē shì míng tiān de gōng kè yào liú zhe ma
Zhiming: Mrs Liu, this is tomorrow's homework. Should I leave it?
刘老师：对，留着。你只擦左边的就可以了。
duì liú zhe nǐ zhǐ cā zuǒ biān de jiù kě yǐ le
Mrs Liu, the teacher: Yes, leave it. You only need to wipe the left side.
美琪：老师，我们做完了！椅子排好了，地也扫干净了。
lǎo shī wǒ men zuò wán le yǐ zi pái hǎo le dì yě sǎo gān jìng le
Meiqi: Teacher, we're done! The chairs are in place and the floor is swept clean.
刘老师：你们分工合作，做得又快又好。谢谢你们！
nǐ men fēn gōng hé zuò zuò de yòu kuài yòu hǎo xiè xie nǐ men
Mrs Liu, the teacher: You shared out the jobs and worked together, quickly and well. Thank you!