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。

When I was a child, I hoped to live in the city. I think I would be happy there. Now I am living in a city, but I miss my home in countryside. There the air is clean or the mountains are green. Unfortunately, on the development of industrialization, the environment has been polluted. Lots of studies have been shown that global warming has already become a very seriously problem. The airs we breathe in is getting dirtier and dirtier. Much rare animals are dying out . We must found ways to protect your environment. If we fail to do so ,we'll live to regret it .

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①No matter what hard the project is, I will finish it on time.

②They were extreme sad at the thought of their missing dog.

③I was about to lock the door while the telephone rang.

④Burying in his study, he didn't know that all the others had left.

⑤It's so nice weather that I'd like to take a walk.

⑥Mr. Smith insisted that the thief put into prison.

⑦The number of teenagers injured in the earthquake is frightened.

⑧Smoking can do damage for your health.

⑨I find the man is very difficult to get along.

⑩My father bought a new bike for me which price added up to more than 1000 Yuan.

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。

Dear Ms Smith,

    I am Li Hua. I am writing to ask a several-hour leave. I was to give a speech to welcome a group of American visiting teachers on Wednesday morning. I am terrible sorry to tell you that I can't come to attend at your class. How a pity! Perspectives on American Literature are always my favourite course. I do hope you can excuse my absence. As to the lessons to be missing, I wonder if it is possible for them to be recorded so that I can listen to it later. Or I will just read my classmate's notes and making them up as soon as possible.

    Your permit will be appreciated. Thanks a lot !

Yours,

Li Hua

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。

    As students, all of us will be faced a problem after passed the college entrance examination. Should we choose a good major and a good university first? Here are some differently ideas. Some more prefer to choose a major first so that they can learn something what they are interested in. In this way, they can put their hearts into study and got their favorite jobs in the future. Other believe that the environment is important to one's develop and that graduates from key universities are more likely to find good jobs. As far as I'm concerning maybe the choice should be a good university if we can't obtain both.

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。

    My dog Dino is really an superhero, who helps keep us safely, especially on the roads. Take a look at he did last week. Last Wednesday, Dino saved our neighbor's boy who run in front of a car to get his ball. People can get very much angry when driving, usually on silly reasons. Last Tuesday, a driver behind us started shouting at my mum when she stopped her car to let several child cross the road. Dino soon made him shut up. Last Friday, Dino saw two girls running a red light but he soon made them changing their minds. Last Sunday Dino caught my dad talking on their mobile phone while my dad was driving. Dino immediately stopped him. What a smarter dog!

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。

My sister and I are riding our bikes outside our town. Suddenly, we saw something small moving in the wood ahead of us. We all stopped to investigate. Soon we discovered it to be a starved dog with an injured leg. We realized we had to rescue it. We returned back to town with the dog to get the help it needed. A farmer happened to be nearby until we got into town. The dog ran straight to him as if he were his owner. At this moment he knew he had to keep it. The dog now lives the easy life on the farm with lots of animals to play.