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。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（∧），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 friendships 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?
