My secondary school is a place that bears all the hallmarks of my childhood memories. It is placed in the center of my district. Surrounded by a paddy-field, it enjoys lined- trees and colorful garden, which creates a wonderful view. Moreover, this school was designed with a large- scale plan. It is a 2 storied building of u shape with capacity of 1000 people and it was invested heavily in infrastructures with well- equipped classrooms. In a good environment, students are given many precious chances to discover and develop their inner talents. Besides modern facilities, this school is also well- known for enthusias and qualified teachers who are always dedicated and devoted themselves to teaching career. In conclusion, studied in this school for four years, it has become an indispensable part in my life.

My secondary school is a place that bears all the hallmarks of my childhood memories. It is placed in the center of my district. Surrounded by a paddy-field, it enjoys lined- trees and colorful garden, which creates a wonderful view. Moreover, this school was designed with a large- scale plan. It is a 2 storied building of u shape with capacity of 1000 people and it was invested heavily in infrastructures with well- equipped classrooms. In a good environment, students are given many precious chances to discover and develop their inner talents. Besides modern facilities, this school is also well- known for enthusias and qualified teachers who are always dedicated and devoted themselves to teaching career

My primary school is a paradise with fresh air, picturesque surroundings and beloved people around. It is situated in the countryside among far-flung green fields. Its simple design with two buildings perpendicular to each other and a variety of shade trees and flowers gave me the feeling of closeness. Besides, there was a vacant plot for students to play soccer every afternoon after school. Moreover, all the teachers were extremely whole-hearted and dedicated. In addition, I had close friends who were always by my sides to help me whenever I had difficulties. To put it briefly, this school has had a great impact on my childhood experiences and all memories about this primary school will always be in my deep affection and never fade in my thoughts.

I study at the secondary school, its name ... . It is very big. It is has many classroom and WC. There has a swimming pool, too. Each suject got a classroom, so that why the school big. My school has a big school yard. We can play anything in there. There got a place to sit and relax, too. It can help us not wet when rain. We can also read books in the library. In the sixth floor, there has a mini place to play football or tennis. And a outdoor's library, too. I love my school much!

Spending time in an English-speaking country is a really essential experience for the English-learners as well as the best way to study the language. However, I believe that there are many other strategies for learning English, which are useful enough.

In the first place, studying in an English-speaking country such as Australia gives you a variety of opportunities to improve your speaking and listening skills. Moreover, you practice your English while doing ordinary things, for instance, shopping. Consequently, you become more self-confident. Being overseas is the best way to learn the language effectively.

Secondly, providing that the learner is hard-working enough, they can learn English even in their own country. The English Language Schools provide their students with a wide range of opportunities to master the language. Furthermore, there are different methods to practice your skills such as watching English television, reading English books, magazines, etc. The combination of some of these methods might be a really useful strategy.

In conclusion, there are many advantages of living in an English-speaking country as this is the best strategy to learn the language. Nevertheless, if the student is responsible and works hard, they can achieve success in studying English not only in a country where the language is widely spoken.

Dịch:

Bỏ thời gian tại một nước nói tiếng Anh là một kinh nghiệm thực sự cần thiết cho những người học tiếng Anh cũng như cách thức tốt nhất để nghiên cứu ngôn ngữ. Tuy nhiên, tôi tin rằng có nhiều chiến thuật khác để học tiếng Anh, mà có đủ lợi ích .

Thứ nhất, học tập tại một nước nói tiếng Anh như Úc sẽ cung cấp cho bạn nhiều cơ hội để cải thiện văn nói của bạn và các kỹ năng lắng nghe. Hơn nữa, bạn thực hành tiếng Anh của bạn trong khi làm những điều bình thường, ví dụ, mua sắm. Do đó, bạn càng trở nên tự tin. Ở nước ngoài là cách tốt nhất để học ngôn ngữ một cách hiệu quả.

Thứ nhì, nếu người siêng học, họ có thể học tiếng Anh, ngay cả tại đất nước của họ. Các trường học Ngôn ngữ tiếng Anh phải tạo cho học sinh mình cơ hội để khắc phục được những khó khăn của ngôn ngữ đó. Phương pháp khác, có những cách khác nhau để thực hành các kỹ năng của bạn như xem truyền hình tiếng Anh, đọc sách tiếng Anh, tạp chí, v.v. Sự kết hợp của một số trong những phương pháp này có thể là một chiến lược thực sự hữu dụng.

Tóm lại, có nhiều lợi thế về sinh sống tại một nước nói tiếng Anh như đây là chiến lược tốt nhất để học ngôn ngữ. Tuy nhiên, nếu học sinh có trách nhiệm và siêng học, họ có thể đạt được thành công trong việc học tiếng Anh không chỉ ở một đất nước mà ngôn ngữ được nói rộng rãi trên thế giới.

Spending time in an English-speaking country is a really essential experience for the English-learners as well as the best way to study the language. However, I believe that there are many other strategies for learning English, which are useful enough.

In the first place, studying in an English-speaking country such as Australia gives you a variety of opportunities to improve your speaking and listening skills. Moreover, you practice your English while doing ordinary things, for instance, shopping. Consequently, you become more self-confident. Being overseas is the best way to learn the language effectively.

Secondly, providing that the learner is hard-working enough, they can learn English even in their own country. The English Language Schools provide their students with a wide range of opportunities to master the language. Furthermore, there are different methods to practice your skills such as watching English television, reading English books, magazines, etc. The combination of some of these methods might be a really useful strategy.

In conclusion, there are many advantages of living in an English-speaking country as this is the best strategy to learn the language. Nevertheless, if the student is responsible and works hard, they can achieve success in studying English not only in a country where the language is widely spoken.

Spending time in an English-speaking country is a really essential experience for the English-learners as well as the best way to study the language. However, I believe that there are many other strategies for learning English, which are useful enough.

In the first place, studying in an English-speaking country such as Australia gives you a variety of opportunities to improve your speaking and listening skills. Moreover, you practice your English while doing ordinary things, for instance, shopping. Consequently, you become more self-confident. Being overseas is the best way to learn the language effectively.

Secondly, providing that the learner is hard-working enough, they can learn English even in their own country. The English Language Schools provide their students with a wide range of opportunities to master the language. Furthermore, there are different methods to practice your skills such as watching English television, reading English books, magazines, etc. The combination of some of these methods might be a really useful strategy.

In conclusion, there are many advantages of living in an English-speaking country as this is the best strategy to learn the language. Nevertheless, if the student is responsible and works hard, they can achieve success in studying English not only in a country where the language is widely spoken.

Nếu viết như vậy với đề bài này thì e gần như lạc đề rồi nhé! E nên nói trọng tâm vào đề hơn

I live in Ho Chi Minh City, and Tet holiday in the city is very bustling occasion. Within a month before the Lunar New Year, the streets are very crowded, many people go out to do shopping and enjoy the holiday scenery. My parents are busy cleaning the house, and I am busy thinking about what to wear and where to go. Right after we have a break from school, my friends and I spend most of the time on Nguyen Hue Flower Street to take pictures. However, Nguyen Hue Street is not the only beautiful place, almost everywhere in the main streets are wonderful for people to have great pictures. They are beautifully decorated with bright lights, and the apricot blossom - the symbol of New Year's Day can be found everywhere. On New Year's Eve, my family and I watch fireworks from Sai Gon Bridge; we have to go there before nine o’clock to get a good spot. Early in the first morning of the year, we go to the pagoda to pray for peace and health, and then I accompany my parents to visit my grandparents and relatives. Tet is my favorite holiday because it is an occasion to enjoy the festive atmosphere, delicious food, and receive lucky money. I wish that Tet could last for a month.
 

Area and population
Area: 127.59 km²
Population: 230,000 people
Ethnicity: Most of them are Kinh
Administrative boundaries
Me So commune, Thang Loi district, Van Giang district, bordered on the east, and adjacent to Tan Chau, Tu Dan, Ham Tu, Da Trach, Binh Minh and Khoai Chau districts of Hung Yen province.
Phu Xuyen district to the south.
It borders Thanh Oai district to the west, separated by Nhue river.
North borders with Thanh Tri district.
Administration
Thuong Tin district has one district town as Thuong Tin town and 28 communes of Chuong Duong, Dung Tien, Duyen Thai, Ha Hoi, Hien Giang, Hoa Binh, Hong Van, Khanh Ha, Le Loi, Lien Phuong, Minh Cuong. . Self

District leaders
Party Secretary: Nguyen Tien Minh
- Chairman of the People's Council: Mr. Phung Van Quoc

Deputy Secretary - Chairman of District People's Committee: Mr. Kieu Xuan Huy
Deputy Secretary of District Party Committee: Mr. Phung Van Quoc
Vice Chairman of the District People's Committee: Mr. Nguyen Sy Tuyen, Mr. Nguyen Tuan Thinh, Ms. Le Thi Lieu
Vice Chairman of the People's Council: Mr. Le Tuan Dung, Mr. Phan Thanh Tung
Geography
On land, most of the land area is plains covered by two main rivers, Red River and Nhue River.
Traffic
Thuong Tin has convenient transportation system with two land routes running along the district. It is 17.2 km long and 1 km of highway 1A and the highway of Phap Van - Cau Gie bridge is 17 km long. Old 73); crossing the district is the provincial road 427 (old road 71) from Van La slope (Hong Van commune) crossing the Khe Hoi crossing bridge on the Phap Van - Cau Gie highway to Thuong Tin town to cut with the North-South railway to the west of the district and ends in Thanh Oai district. Provincial highway 429 (73 old) from Phu Minh town (Phu Xuyen district) crossing Van Diem bridge to Do Xa junction intersection with the old national highway 1A; Next is the section 429 from Tia Cross intersecting the north-south railway running into Dong Quan. It is expected to build Me So bridge connecting Van Giang district of Hung Yen province.

In the district, the North-South railway runs through three stations: Thuong Tin, Cho Thi and Van Do stations.

Waterway with Red River, Hong Van port, Van Diem port. Through the river to Tu Dan, Khoai Chau, Pho Noi and Hung Yen.

Currently, Thuong Tin district is investing in Duyen Thai urban area located in the north of the district, adjacent to Lien Ninh commune of Thanh Tri district.

Street
427
Ba Dinh
Post office
Chuong Duong
Cong Xuyen
Danh Huong
Rowing
Unite
Independence
Highway 1A
Ha Vy
Happy
Integration
Hong Van
North Channel
Metallurgical
Luong Mau Huan
Luong Van Can
Serious
Nghiem Xuyen
Nguyen Du
Nguyen Trai
Crossing You
Ganh Restaurant
Quat Dong
Ta Mon
Success
Provincial Highway 427B (former 71)
Tran Nhat Duat
Tran Phu
From Berlin
From Paper
Ziyang
Free
Nature
Old document
Vu Duc Trinh
History
Ong Nguyen is a suburb of Tran Son Nam from the Le dynasty to the Nguyen dynasty. At that time, Thuong Tin was in Ha Dong province. Phu Thuong Tin now includes districts: Thanh Tri, Thuong Phuc (now Thuong Tin), Phu Xuyen and Hong Duc (now My Duc district).

On April 21, 1965, Thuong Tin district of Ha Tay province (merging two provinces of Ha Dong and Son Tay), including 33 communes: Chuong Duong, Dai Ang, Dong My, Dung Tien, Duyen Thai, Ha Hoi, Hien Giang Hoa Binh, Hong Van, Khanh Ha, Le Loi, Lien Ninh, Lien Phuong, Minh Cuong, Nghiem Xuyen, Ngoc Hoi, Nguyen Trai, Nhi Khe, Ninh So, Quat Dong, Ta Thanh Oai, Tan Minh, Thong Nhat, Phu Phu, Tien Phong, To Hieu, Tu Nhien, Van Binh, Van Diem, Van Phu, Van Tao, Van Tu.

On December 29, 1975, Thuong Tin district of Ha Son Binh province was merged into Ha Tay and Hoa Binh provinces.

On December 29, 1978, five communes in the north of Thuong Tin District were Dai Ang, Lien Ninh, Ngoc Hoi, Ta Thanh Oai and Dong My. There are 28 communes in Chom Duong, Chuong Duong, Dung Tien, Duyen Thai, Ha Hoi, Hien Giang, Hoa Binh, Hong Van, Khanh Ha, Le Loi, Lien Phuong, Minh Cuong, Nghiem Xuyen, Nguyen Trai, Nhi Khe, .

On March 19, 1988, Thuong Tin Town was established on the basis of adjusting part of the natural area and population of Van Binh, Van Phu and Ha Hoi communes.

On August 12, 1991, Thuong Tin returned to Ha Tay province. As such, Thuong Tin district has 1 town and 28 communes, keeping stable so far.

On August 1, 2008, together with the whole province of Ha Tay, Thuong Tin district was merged into Hanoi capital according to the resolution of the Government of Vietnam.

The economic structure
Industry - construction: 53.4%
Trade in services: 32.5%
Agriculture: 14.1%
At present, the district has many projects and projects such as:

Northern Thuong Tin industrial park (not yet invested).
Ha Binh Phuong Industrial Zone is located in the communes of Ha Hoi, Van Binh and Lien Phuong.
Phung Hiep Industrial Park is located in 4 communes: Thang Loi Commune, Dung Tien Commune, To Hieu Commune, Nghiem Xuyen Commune.
Quat Dong industrial complex is located in Quat Dong commune.

Lời giải:
Vì $a$ là số nguyên tố lớn hơn $3$ nên $a$ có thể có dạng $6k+1, 6k+5$ với $k\in\mathbb{N}$

Nếu $a=6k+5\Rightarrow 10a+1=10(6k+5)+1=60k+51=3(20k+17)\vdots 3$ và $10a+1>3$ nên $10a+1$ không thể là số nguyên tố (trái giá thiết)

Do đó $a=6k+1$

Khi đó: $5a+1=5(6k+1)+1=6(5k+1)\vdots 6$ (đpcm)

Nowadays, energy is being run out more and more. We need to save energy because nobody of us can live without energy. So why don't we start to do it right in our home ? 

We have many ways to save energy in our home. One of those ways is using electricity, water and gas economically. Such as we should turn off the light in room when we go out or in unnecessary situations, avoid wasting water, shut the kitchen stove when stop cooking. 

Besides, we should use electrical equipments which are energy - saving. Such as using lights and fans that have low capacity, or using equipments which reserve electricty. Not only do these help us to save money but also they work effectively. 

In addition, we should frequently check electrical equipments in our home in order to fix opportunely . 

In summary, we need to save energy so that energy isn't run out and continues to serve human's life.

Dịch:

Ngày nay, năng lượng đang ngày càng cạn kiệt. Chúng ta cần tiết kiệm năng lượng vì không ai trong chúng ta có thể sống mà không có năng lượng. Vậy tại sao chúng ta không bắt đầu làm ngay tại nhà? Chúng ta có nhiều cách để tiết kiệm năng lượng trong nhà. Một trong những cách đó là sử dụng điện, nước và khí một cách kinh tế. Chẳng hạn như chúng ta nên tắt ánh sáng trong phòng khi ra ngoài hoặc trong các tình huống không cần thiết, tránh lãng phí nước, đóng bếp khi ngừng nấu ăn. Bên cạnh đó, chúng ta nên sử dụng các thiết bị điện tiết kiệm năng lượng. Chẳng hạn như sử dụng đèn và quạt có công suất thấp, hoặc sử dụng thiết bị dự trữ điện. Không chỉ làm những điều này giúp chúng tôi tiết kiệm tiền mà còn làm việc hiệu quả. Ngoài ra, chúng ta nên thường xuyên kiểm tra các thiết bị điện trong nhà của chúng tôi để sửa chữa kịp thời. Nói tóm lại, chúng ta cần tiết kiệm năng lượng để năng lượng không bị cạn kiệt và tiếp tục phục vụ cuộc sống của con người.

cho mình nha bn!

In Vietnam, almost everyone, has been a volunteer work and I have too. At my age, I have not been donate blood so I often donate books, toys and clothes for street children and homeless people. I often do this work with my mother. Latest here on Sunday, I with my mother was used to donate books and clothes for a charity organization. In here, I met the orphans children. I played with them. Then I gave candies to them. They were all very happy.Some people think doing volunteer work is waste of time but in my opinion, doing volunteer work help me relax after school and it help me healthy. When I doing this work, I feel very happy to bring happiness to them.

ko copy tự làm nhé pye!

tk

Over time we live and develop, each of us will choose a unique habit. My friends have a habit of playing games on the weekends. Personally, I have a habit of reading in my free time every day.  This habit of mine is formed from the shape of my hobby. Since childhood I have enjoyed reading. The types of books that I often read are books about life, manners, and economics. Ever since I could read, I have always enjoyed reading. However, when I was a kid, the kind of books I read were usually comic books. Currently, studying time is quite busy so I don’t have a fixed time for reading. However, whenever I have time I will read. I usually carry a book that I am half-reading in my bag. This ensures I can read ns anywhere and at any suitable time. I think the habit of reading has helped me improve myself a lot. In the future I will keep this useful habit. If you are free, you can practice reading habits like me.

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