1 . 请你修改以下的每个句子，每句有1处语言错误，错误涉及一个单词的增加或修改。
增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。
修改：在错的词下面划一横线，并在横线下面写出修改后的词。
注意：每处错误及其修改仅限一词。
1. There are occasions that we must give in.
2. Strange things are happened in our neighborhood last night.
3. It is the highest building that I lived in.
4. This was the first time she has seen an elephant.
5. It’s high time I go to Beijing to see my son.
6. The students encouraging by the teacher worked even harder.
7. The injured workers used to being taken good care of in the hospital.
8. The machine was produced last year is very expensive.
9. The exciting children are opening their Christmas presents.
10. The number of students in our school are about 3,000 and a number of them study hard.

2 . 单句改错
1. If you will attend the meeting, you’d better leave now.
2. Their long struggle ended with failure.
3. No matter how happened, he would not mind.
4. His failure resulted in his carelessness.
5. We couldn’t have found a good place for a picnic.
6. Thieves broke in my house when I was out.
7. The Great Wall is so a well-known tourist attraction that millions of people pour in every year.
8. There is to be a total ban of smoking in the office.
9. It is recognized what this way could be better.
10. All the workers belonged to the factory must obey the rule.

3 . 文中共有10处语言错误，每句中最多有两处。错误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。

Three years ago, I was addicted for computer games. I played with games day and night on weekends. I lost interesting in my studies and I was often absent from school.

My parents got very worrying about me. They persuaded me to quit play games, but I wouldn’t give up my bad habit. Later my English teacher gave me some advices on how to quit the bad Habit. Listing the disadvantages of playing computer games on a piece of paper, I put them on my bed and tried to remember them. Beside the list were my effective schedule. I followed my schedule strictly and managed to get rid playing games. After that I became active in studying and turn out to be one of the top students in our school.