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。
Life is a mystery and we will never know that is waiting for us. But one thing is for sure: problems are unavoidable. For us, it's the process of solving problems that help us grow.
Making a speech in public used to make me frightening. With a strong accent and terrible pronunciation, I failed in speech competition many times, but I didn't lose my heart. I was admitted by the school speech club. I considered it a good chance for me to improve myself. With a help of others, I recorded my speech, listening to it and corrected my pronunciation. Now I am confident enough to give my best speech to you all.
Don't afraid of problems, but make use of it to be the best of ourselves!
