短文改错。
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5处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（∧），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. 每处错误及修改均仅限一词；
2. 只允许修改5处，多者（从第6处起）不计分。
I got your letter dated April 20 the day before yesterday. All of our family greatly delighted to
learn that you are getting on very well with your subject. Time passes quickly. After a few
weeks, you'll finish middle school. What pleases us most is that you have made up your
mind to attend college examination this summer. What wonderful it is! Dad, as well as
Mom and I, are with you. We hope you can make better use of your time. The fuller
preparations you make, the surer of success you'll be.
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