假如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。

Dear Editor,

    I used to be a physician in the children's department of a hospital. From time to time I treated children who had poisoned by medicine with older family members. The children didn't know the medicine was danger; they just knew it tasted sweet. Children easily open the bottle what we now use in China.

    Some days before I talked about medicines with an American. He showed me a sort of plastic bottle. The design was quite simple and I'm sure our Chinese factories could produce these bottles. The top of the bottle can be opened by pressing down on them while turning, which is difficult for most young children to do so, though grown-up can open these bottles very easily.

    I'm certainly that the expense of making such tops would be very small. As a doctor, I'd love to see this doing. And most parents would be grateful.

Sincerely yours

Li Hua

注意：每个句子均有1处语言错误。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（＼）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。

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。

    In the past two years, our school had organized many activities. What impressed me most was an activity calling “Learning to Farm”. In an autumn afternoon, we went to the farm, where we learned to plant potatoes. Having been in the city for such a long time, we are so happy to go to the countryside. After we got there, we were divided into three groups, we started to work. Some students cut potatoes into pieces, some dug hole, and the others put the pieces of potatoes into the holes, put the earth back and pushed them down hard. We were all busy working as all the work was done. Though we were tired out, we felt pleased on our way back to home.

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 David,

    I'm more than pleasing to know that you are learning Chinese. I'd like to recommend www.edchinese.com to you. It's a good website for non-Chinese speakers which are learning Chinese, especially for beginner.

    Firstly, it provided you with a variety of online courses, such as Chinese idioms, dialogues and customs. Through this courses, you will have a good understanding of the Chinese language as well as its culture.

    Beside, it will help you learn the Chinese in interesting and effective ways. Here you can learn to sing some Chinese songs, enjoying Tang poems and watch Chinese movies.

    More importantly, there are teachers online whom you can turn to help. And all this is free of charge.

    I hope you will find this website attractively and helpful.

增加：在缺词处加一个漏子符号（∧）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 Mr. Smith,

    In your letter, you asked me about the Chinese Spring Festival. Now I'd like tell you something about it.

    The Chinese Spring Festival came on the first day of the Chinese Lunar New Year, when is usually in late January or February. There is a name for each year, such as the dog, the monkey, the tiger and one of the twelve animals, and this year is the year of the dog.

    After the Spring Festival, the Chinese people usually give their houses a good cleaning. On the eve of the Spring Festival, all the member of a family will get together, eating dumplings, fish and meat and parents may give children some luck money in red paper. On the first day of the New Year, there is dragon dances and carnivals. People usually go to visit at their relatives and friends, which is a good way to express their best wishes to the coming year.

Yours sincerely,

Li Hua