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。每处错误仅涉及一个单词的增加、删除和修改。
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。
Last Saturday afternoon, a charity sale held on our school playground. Although it was no easy task, students active participated in it.
To organize it successfully, we' made full preparations. After the sale, from the students we collected variously second-hand goods which were still in good condition and classify them. Then came the big day. With all the teachers and students involve, the activity turned out to be successful. We raised 5,000 yuan for total at the end of the activity. All the money we raised up will go to the students from poor family to help finish their studies. It's so a meaningful activity that students look forward to the next charity sale.
