短文改错（共10小题；每小题1.5分，满分15分）
此题要求改正所给短文中的错误。对标有题号的第一行作出判断：如无错误，在该行右边横线上画一个勾（√）；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 editor,
I am a high school student. A few days before,                             76_______
one of my very good friend told me that he was going                        77_______
to stop the school. He said that he wanted to start his                     78_______
own business. I tried best to get him to change his mind,                   79_______
but I failed.
I know it is difficult of him to change his mind.                          80_______
He is not doing so good in his studies, yet I want to                       81_______
insist that I give it a try.  The process is more                      82_______
important than the results.  Now there are only 60 days                 83_______
left before that test. I am not sure that his decision is               84_______
right or wrong . I needed your advice.                                  85_______