此题要求改正所有短文中的错误。对标有题号的每一行做出判断：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。
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 one month before I graduate middle school. At                ______
the present, I'm busy reviewing my lessons in order to                    ______
taking 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 a very good university and college.            ____