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lǎo shī yǔ xué shēng zhī jiān de kǒu wù xiào huà 

1 nán tóng xué zhàn zài wǒ zuǒ biān ，nǚ tóng xué zhàn zài wǒ yòu biān ，qí tā rén yuán dì bù dòng ……

2 yǒu yì tiān wài miàn xià dà yǔ ，lǎo shī mǎn liǎn yǔ shuǐ dì zǒu jìn jiào shì ，zài jiǎng zhuō qián bù zhī dào zhǎo zhe shén me dōng xī ，zhǎo le yī huì jiù wèn qián pái de tóng xué ：“wǒ cā zhǐ de liǎn ne ？”

3 xiàn duàn ａ shì xiàn duàn ｂ de yī bàn ，nà xiàn duàn ｂ shì xiàn duàn ａ de duō shǎo