下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

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：把多余的词作斜线（\）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 Sir，

Thank you for your offer of invite me to the summer English course in your school. As for your choice between the two courses, I prefer the four-week course for 60 hours of study. Because of this would allow me more times to do some travelling and make a few new friends either. Of all the subjects I'm learning at school, I like English best. I had been learning English for 6 years but my spoken English remains poorly. So I hope to take this chance to improve it. If is possible, I'd like to stay with a family for a couple of days in order I can know some customs in England. I believe I will have wonderful time this summer.

Yours truly,

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。3．错误类型不涉及单词拼写。

    Good relationships between teachers or students are important to teaching and learning only with good relationships can student and teachers cooperate well.

    Good relationships depended on both sides. On the one hand, students should respect teachers and our hard work. They should polite to teachers and ready to following their advice. On an other hand, teachers should be kindly, friendly and patient to students. They must be responsible on their teaching and help students. If both sides treat  to each other in a friendly way, teaching and learning in class will be highly efficient.

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：每处错误及其修改均仅限一词。

只允许修改10处，多者（从第11处起）不计分。

    My friend Nick told me story about his experience back in the US, that was very interested. One day he was having a yard sale and the old man living next door come by to help. As the old man looked over the things in the yard that was to be sold, he stopped at a box of golden ball for Christmas trees. On the box was a card say, “25 cents each.” “You will never sell these for that much.” he told Nick. Convincing, Nick has brought the price up to 10 cents a piece. Without a moment's delay, my neighbor picked up the box but announced, “I'll take them.”

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。

    Hello, boys and girls! Today, I am going to talk with what you should do when a fire alarm go off. If you hear the alarm, stand in line at the door and wait your teacher to lead you outside. Stay close to your teacher and classmate. Don't panic or get out of line, and trying to remain quiet and calmly. Soon the firefighters will come and put out a fire. If it's a false alarm and there is no fire, your teacher will lead us back to the classroom. If you notice that when someone is missing and hurt, tell your teacher immediately.

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。

    On December 10^th last year, we paid a visit of a high-tech agricultural garden. It took us one and a half hour to get there. The natural environment there was very pleased, and we could breathe fresh air. The intelligent glass greenhouse, where many kinds of fruits and vegetables were growing there, was really amazing. Though it was very cold outside, the greenhouse controlling by a computer could provide a proper temperature. That was also very interesting to be surrounded with different plants. We could see so many colorful fruits and vegetables in the greenhouse where all of us have never seen before. Luckily, we allowed to taste some of the fruits and vegetables. We really had the good time and learned a lot from the visit.

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。

    On a storm night, I was alone at home. After finishing my homework, I was about to go to bed. All of sudden, the light went out. Meanwhile, there was a flash of lightning following by thunderstorms. I was so scared that I ran to my bed but hid myself under the blanket. To make matters bad, my parents went to hospital to accompany with my sick grandfather. I felt too frightened because my mind was full of scary thought. After some time passed, I fall asleep at last. At breakfast I told my parents that I had seen last night. My parents were also frightened and they promised that they would ever leave me at home alone.