短文改错。
此题要求改正短文中的错误。对标有题号的每一行作出判断：
如有错误(每行只有一个错误)，则按下列情况改正：
该行多一个词：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。
该行缺一个词：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。
该行错一个词：在错的词下划一横线，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,              one of my very good friend told me that he was going             to stop the school. He said that he wanted to start his             own business. I tried best to get him to change his mind, but I failed.         I know it is difficult of him to change his mind.             He is not doing so good in his studies, yet I want to               insist that I give it a try.  The process is more                important than the results.  Now there is only 60 days           left before that test. I am not sure that his decision is          right or wrong . I needed your advice. .	1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____ 8. _____ 9. _____ 10. _____
1. before-ago  2. friend- friends  3.去掉the  4.best 前加 my  5.of -for   6. good -well  7. I-he  8. is-are  9.that -whether 10. needed -need
I once thought Jonna was a good student, for she often got a high mark but ________ she was found out to often cheat in examinations.
[     ]
A. actually   B. truly C. surely   D. mostly
The students are ________ young people between the age of sixteen and twenty.
[     ]
A. most   B. almost C. mostly   D. at most
The company"s profit drop _____ in the last three months of 2009 due to the financial crisis.
[     ]
A. narrowly   B. sharply C. roughly D widely
I am not sure whether I will have anything else to do tomorrow. _____, I will try every possible means to come to the party.
[     ]
A. Anyhow   B. In general C. In short   D. Therefore
I was________nervous when I gave the speech in public that I forgot everything I wanted to say in the first few minutes.
[      ]
A. such   B. too   C. very   D. so