全文 The whole conversation, with pinyin and English
何老师：同学们，今天的功课是练习本第十二页，还要写一篇短文。
tóng xué men jīn tiān de gōng kè shì liàn xí běn dì shí èr yè hái yào xiě yì piān duǎn wén
Mr He, the teacher: Class, today's homework is page 12 of your workbook, and you also need to write a short composition.
子豪：何老师，短文要写多少字？
hé lǎo shī duǎn wén yào xiě duō shao zì
Zihao: Mr He, how many words does the composition need to be?
何老师：至少八十个字，题目是《我的周末》。
zhì shǎo bā shí gè zì tí mù shì wǒ de zhōu mò
Mr He, the teacher: At least eighty characters. The title is 'My Weekend'.
子豪：我们可以用铅笔写吗？
wǒ men kě yǐ yòng qiān bǐ xiě ma
Zihao: May we write in pencil?
何老师：练习本可以用铅笔，短文要用原子笔写。
liàn xí běn kě yǐ yòng qiān bǐ duǎn wén yào yòng yuán zǐ bǐ xiě
Mr He, the teacher: The workbook can be in pencil, but the composition must be written in pen.
子豪：什么时候要交？
shén me shí hou yào jiāo
Zihao: When is it due?
何老师：下个星期一。
xià ge xīng qī yī
Mr He, the teacher: Next Monday.
子豪：可是这个周末我要去外婆家，可以晚一天交吗？
kě shì zhè ge zhōu mò wǒ yào qù wài pó jiā kě yǐ wǎn yì tiān jiāo ma
Zihao: But I'm going to Grandma's this weekend. Can I hand it in one day late?
何老师：不可以哦。你可以今天先做练习本，星期天晚上再写短文。
bù kě yǐ o nǐ kě yǐ jīn tiān xiān zuò liàn xí běn xīng qī tiān wǎn shang zài xiě duǎn wén
Mr He, the teacher: I'm afraid not. You can do the workbook today first, then write the composition on Sunday evening.
子豪：好主意！我回家就开始做。谢谢何老师！
hǎo zhǔ yi wǒ huí jiā jiù kāi shǐ zuò xiè xie hé lǎo shī
Zihao: Good idea! I'll start as soon as I get home. Thank you, Mr He!