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10处语言错误，每句中最多有两处。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(^ )，并在其下面写出该加的词。
删除：把多余的词用(＼)划掉。
修改：在错的词下画一横线，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仅限一词；
2.只允许修改10处，多者（从第11处起）不计分。
I received your letter dated April 16 the day ago yesterday. Every of our family are greatly delighted to learn whether you are getting along very well with your lessons. Time passes quickly. In dozens of day, you'll finish middle school. What please us most is that you do very good to make up your mind to enter for the college entrance examination this summer. What wonderful it is! Dad, as well as Mom and I , are with you. We wish you to make better use your time .The fuller preparations if you make, the surer of success you'll certainly be.