你这种误人子弟的老师我也见多了,反正有理说不清,我要回教室上课了。
nǐ zhèzhǒng wù rén zǐdì de lǎoshī wǒ yě jiàn duō le ,fǎnzhèng yǒulǐ shuōbuqīng ,wǒ yào huí jiàoshì shàngkè le 。
B: I've seen a lot of lousy teachers like you who hamper students' progress before too, anyway there's no reasoning with you. I need to get back to class.