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l0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l0处，多者(从第ll处起)不计分。
Some students believe that whether they have much money or large possessions, they will be happy. They believe that they will be able to do anything they wanted to do if they have money. Some students think that they should be good health, and enjoy whatever they like. Many students wish to have much wealth from their parents. In this way, they don’t have to work hardly and they can own everything. I don’t quite agree on the above points. I don’t think money means happy. We cannot buy much things with money, such as health, happiness and knowledge. I value knowledge, it makes me happy, for I can do a lot of for mankind with knowledge. Although different people value happiness differently, me wealth of happiness is in my study.