题目内容：

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：在缺词处加一个漏字符号（∧），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。

Yesterday was my birthday, but many of my classmates sent me presents. My mother prepares a tea party for me. It was the third time that we have held a tea party. I invited all my classmate to attend it. They began the tea party at half past six. There was cold drinks and deliciously food. We ate, talked and laughed. We felt that we were happiest men in the world. Time was passed quickly. The clock on the wall struck nine. We had to say “Good-bye” with each other.