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：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。

    We Chat plays an extreme essential part in our daily life. We can chat with friends, shared our photos and kill time by reading WeChat public accounts. But now, we can even gain new knowledge in WeChat study groups, covering something from photography to English. WeChat study groups are a fascinated idea. Learners can make a full use of our spare time by joining these groups. It can let us pick up a couple of useful expression on the subway or read a story while travelling. It's so easy for us to have access new knowledge by joining study groups, especially for those of us which lead a busy life.

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 my way home from school last Friday, I saw a little dog on the sidewalk looking hopelessly. I was held it firmly up in my arms, took it home and feed some milk to it. However, my mom was unwilling to keep them, saying there was enough pets for us, two cats and a dog. I begged my mom not to let it go. Finally, we agreed that it would be deciding by my dad, whom didn't return home from work. Just then the girl and her father drove near, searching for their lost pets. When they thanked us taking care of the dog, I felt very happy.

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；

）只允许修改10处，多者（从第11处起）不计分。

    It was said that there is a poor countryman, who had nothing but an adult goose. One morning a man went to his goose's nest, and lucky he saw a yellow and glittering egg there. He took the eggs home. In his surprise, he found that it was an egg of pure gold. Every morning the same thing was happened, and he soon became rich by sell his eggs. The countryman became more and more greedy. He wanted get all the gold at once, so he killed the goose. Therefore, when he looked inside, he found nothing in their body.

增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

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。

    Stephen Hawking, a famous physicist, was born in Britain on January 8, 1942. As a child, he was enthusiastic about designing complicated toys. But unlucky, he, in his twenty, was studying in Oxford University while he was found seriously ill. Therefore,this didn't stop him living as meaningful and colorful life as others. He was so positive as to eventually defeated all the obstacles. He is also absorbed in his research into the universe. Publishing in 1988, his book A Brief History of Time became a best-seller, from where he put forward his famous theory on time. On March 14, 2018, Stephen Hawking, died in the age of 76 in Cambridge, UK.

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。

    It is true that men are increasing likely to take on the role of househusband, while more women than ever is the breadwinners in their families. There could have several reasons for this. In recent years, parents have had various changes in our society. Equal rights movements have made a great progress. It has become socially acceptable for men stay at home and look after his children. At the same time, the rising cost of living has meant that both marriage partner usually need to work or save money before starting a family. Therefore, when couples have children, they may decide who works and who stays at home, depend on the personal preference of each partner, or based on what partner earns more money.