短文改错。
下面短文中有10处错误，每句最多2处错误,请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号(∧)，并在其下面加上该加的词。
删除：把多余的词用斜线(\)划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1.每处错误及其修改仅限一词；
2.只允许修改10处，多者(从11处起)不计分。
Time flies as an arrow. I'm already in the second half of senior grade 3 before I realized it.
It is only a little more than three months before I graduate middle school. At the present, I'm busy
reviewing my lessons in order to take the college entrance examination. I hope to go to Beijing
University, that is one of the best universities not only in China but also in the world. I'll try my
best to turn my dream to reality. Most of my classmates are also studying very hard to realize our
wishes. I do believe everyone will be able to enter into a very good university and college.
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