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。

    Recently I have started a new job in a small office, which four of us share a water filter(净水器). One of my coworker complained the water tasted "dirty", and she is astonished I could drink the water with any trouble. I even started to doubt my taste buds, but the water really tastes fine. Finally, she figured out the problem was actually my cup, which she simply forgot to clean.

    I can't help but to think about the world we live. Too often we quickly blame other people, other things, something else but ourselves. The world isn't perfect, I know, but I think we should take the step back sometimes and ask ourselves some tough questions. Can I be better? Is my heart really pure? …

    Please clean your cup. Because when you do, the water will taste much good. I promise you this.

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11处起）不计分。

    As is well-known that birds are our friends. But the large number of birds have been killed for food. The other day I was walking in the woods while a shot was heard. Hearing the shot, the bird in the trees flew to all directions. A bird was badly injured and looked sadly. Finding the bird injured, so I decided to take it home. At home I take good care of it. When it recovered, I returned itself to the woods .I hope something should be done to prevent birds from killed.

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。

    I'd like to tell you something more about our school sports meet. It was holding on Oct. 6th, it was a fine day. There were over 1,000 students and teachers attend it. Wang Lin, a student from my class, won the 100-metre race. He finish the race in 12.6 seconds and broke the school record. The sports meet was really success. That was because we were all trying to do my best. Although I was not one of the winner, I was proud of that we had done.

    Look forward to receiving your letter.

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或形式。

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：⒈每处错误及其修改均仅限一词；

⒉只允许修改10处，多者（从第11处起）不计分。

    Nowadays, the computer technology develops very fast that the Internet has become more and more popular. Some students regarded it as a great helper. Because there has a lot of information online, so they can surf the Internet for any information they need in a short time without working hard in the library. This is also very convenient to talk with others by using the Internet. Moreover, other students think that there is some information online that is not good for students. In addition, spend too much time playing games will not only have a bad effect on their studies but also do harms to health. Therefore, we should make properly use of the Internet. It's of great importance separate good plants from wild weeds.

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。

When I was in middle school, I enjoyed reading science books, and they were really difficult to understand them. Whenever a problem beats me, I would turn to my physics teacher for help. Go through materials together page by page, we were tearing the mask of nature off. It was his guidance which encouraged me to study physics serious today. Now we're in a period when science plays an important role on people's lives. From construction workers who build laboratories to teachers who pass on knowledges, everyone contributes to science in their own unique ways. All in all, science is everlasting topic for mankind. Faced with it, we must make ourselves well preparing.