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 we know, when senior students finish their school, most of their reference books are thrown away, which are still in good condition. How a great waste it is!

    I suggest that students must recycle all these books. On the one hand, recycling them can save a lot of natural resource, which are used to make textbooks. On the other hand, the notes in the books are helpful to whoever need them.

    In fact, recycling textbooks has been increasing popular in such countries like America and Australia. We should learn from them, but make every effort to build energy-saving society. In my opinion, it is of much benefit from our present and our future.

增加：在缺词处加一个漏词符号（∧），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：在错的词下面画一横线，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。

Time and tide wait no man. My mother is becoming a middle-age woman quietly. She had been busy running after us all the years. My father is very busy every day outside. But the heavy burden falls on my mother's shoulder. Because my school is far from my home, I have to go to school by the train and my mother sees me off at the station every time. I often choose a seat where is close to the window, so I can see her. However, I always can't help run tears from my eyes. All the buildings and people outside the window disappear. I wave gentle to my mother and I look at her till the view of her back disappears. Up to now, even if he is busy, she still does it as usual. The view of my mother's back will never change in my heart.

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。

    During last summer holiday, I found part-time job, worked in a toothbrush factory at night. Not until I experienced it did I realized that it was no easy job. I went to work when my parents were going to bed. On the morning, when my parents were going to work, I came to home to sleep.

    This backward schedule was very tough for me that I often felt tiring. But I am glad that I had this forgettable experience. Not only is it kind of fun to “rise and shine” along with the moon or stars, but also I learn to appreciate the hard work of those which are working while the rest of us are sleeping.

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。

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 to the online course, it is extreme convenient and flexible in time to learn from something. However, there are many different courses who are from different teachers or institutions. You can learn them over or again. Then there're social forums where you can communicate with other learners, helped to improve your understanding.

    But on the other hand, you can't see and feel teachers as in traditional classes. You will also fail to enjoy the liveliness in it. And a great quantity of problem will not get solved in no time when meet them. So you can try the online course, and you can also learn in the school in the same time.

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.

    Li Hua and I were neighbors and we went to same school. We always go to school together. We were good friend and had a great deal to share with every day. However，one day，Li Hua copied my homework，which made me such angry that I did not want to be friends with him any long. Then on Monday morning I ran downstairs without realize it was raining，but there was no time to return home to fetch an umbrella. It happens that Li Hua was just around the corner and he offered to share her umbrella with me. He made an apology to me in a gently voice. I forgave him but gave him a hug.

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。

    Yesterday we took part a tree planting activity organised by our class. Early-in the morning, we set out for Bantou Reservoir in Xiamen. When we were arrived there, we began to work immediately. Firstly, we dug holes that are slightly larger than the root balls. Next, we gentle placed the trees into our new homes. After that, we refilled the holes use enough soil to support the root. Finally, we watered the trees. Three hours passed by after we knew it. Tired as we were, we felt exciting, talking and laughing all the way home. How an unforgettable experience!