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。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。
Ladies and gentlemen，
It’s my honor to give a speech here．After-class activities play a important part in our school life．Proper activities help enrich our lives，broaden our horizons or develop our personalities.
Mine own experience can serve as a case in point. When I was in Senior one，I become a member of our drama club，that I used to visit on weekends．Since my participation in various activities organizing by the club，I achieved a lot．
These activities bring me a lot of funs，provide me with good opportunities to develop new friend-ships and open a window through which I have a brand-new outlook．With so much advantages shown above，why not to join us at once？