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10处，多者(从第11处起)不计分。

    It has been a long time since I did anything good for the environment. Feeling responsible to protect the environment, I decided to take the action again. I told my idea to my friends and we planned to plant tree on the hill in the countryside. We came to the foot of the hill and selected a place where looked suitably and settled down. We spend a few hours digging holes and placing the young seedlings. Then we wrote our wishes on cards one to one and buried it deep down the roots of the trees. We also took a lot of pictures. We were such busy that we didn't realize that it was time to go back. I felt really glad that we made difference to the environment.

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。

    Some phones had become part of our daily life. No matter who we are, we can see people busy play with their smart phones. Smart phones benefit them. They help us escape the pressure of life and get informations. However, if we spend too much time on them, we won't have time to contact face to face our friends and family. And our life, study and work will hurt. In my view, we should limit to our using smart phones except for a purpose of learning. Meanwhile, it's absolute necessary for us to take part in more outdoors activities.

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（\）划掉。

修改： 在错的词下划一横线, 并在该词下面写出修改的词。

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。

    Dear the teachers and schoolmates, it's a great honor for me to be here today and share my experiences of learning English with you. I want to learn English good to take good job, so I learn English in some difference ways. In class, I learn new words, useful expressions and grammar and take efforts to understand the texts under the help of our English teacher. After class, you do a lot of exercises prepare for the college entrance examination. I also read news and watch videos on the Internet and from other source. I have a lot of fun especial when learning English with cartoon movies.

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。

    Nowadays many people drive instead of taking a bus or walking to work. It causes more traffic jam and accidents. As the student, what can we do to guarantee our safe? First of all, the traffic rules must be strict obeyed. When we cross streets, wait until the traffic light turn green. Next, don't forget walk on the pavement. Finally, I think it very dangerously to wear headphones while walking or cycling. Since we can't pay enough attention on the traffic around us, so accidents may happen. Taking good care of ourselves and don't let our parents worry about us.

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10处，多者（从第11处起）不计分。

Dear Tom,

    I'm glad to know that you are interesting in Beijing Opera. Now let me give you a brief introduce to it. Although it is called Beijing Opera, whose origins are in the provinces of Anhui and Hubei.

    Known for a national opera, Beijing Opera has a long history and considered as one of the world's three ancient operas. And it has the four roles, include sheng, dan, jing and chou. The characters are divided into beauty and ugliness, kindness and evil, which are presented vivid.

    The stage design of Beijing Opera is usually simple. However, symbols play an important role. Performers tend to use our body movements to represent actions.

    Best wishes.

Yours,

Li Hua