此题要求改正所给短文中的错误。对标题有题号的每一行作出判断：如无错误，在该行右边横线上画一个钩（√）；如有错误（每行只有一个错误），则按下列情况改正：此行多一个词：把多余的词用斜线

此题要求改正所给短文中的错误。对标题有题号的每一行作出判断：如无错误，在该行右边横线上画一个钩（√）；如有错误（每行只有一个错误），则按下列情况改正：
此行多一个词：把多余的词用斜线（﹨）划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。
此行错一个词：在错的词下面画一横线，在该行右边横线上写出改正后的词。
注意：原行没有错的不要改。
Dear my younger brother,
I’m writing to discuss the problem of bringing the         76.     
mobile phone to school with you. I think that is            77.     
very mon of young people to have a mobile phone         78.     
nowadays for it is very convenience. But                   79.     
many students fail use it in a proper way, so it often      80.     
interrupts the class and even affect their studies. As a        81.     
middle school student, you don’t have to get in the touch     82.     
with others during your school time. I hoped you can learn     83.     
some useful lesson from others’ experience. You had better     84.     
not bring my mobile phone with you when you go to school.      85.     
Love,
Li Dong 正确