假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两赴，每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（八），并在其下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均限一词。
2．只允许修改10处，多者（从第11处起）不计分。
It is universally known that opportunity is important, and you could not seize one without being equipped with competitive forces,  which you could approach success.
One year ago, I studied in the high school and whenever I failed an exam, I felt frustrated and thought it was a bad luck which contributed to my failure. At that time, when my father asked me whether
I prepared for the exam and mastered the basic knowledge or not, I felt ashaming and couldn’t say a single word. From then on, I grasped every chance to learn how to make good use of my study resource. With the improving on basic reading and calculating skills, I succeeded the College Entrance Exam.
Only then did I realize how important it was to make a fully preparation.