Write about your best friend

My best friend is Linh. We have known each other since we were 6 years old. However we became best friends when we were at grade 7. I think that you want to know why me and her became close friend?Because, one day, I was drowning when she appeared and secured me from the Death and since then, we has become closed fiends.
If I were to describe how she looks I would say she is very pretty. I think she is pretty enough to participate in Viet Nam's Next Top Model. She has long black hair a straight nose and a small pointed chin. She is quite slim. She really likes to dress up so I usually see her wearing skirt and a T-shirt. She has a very nice personality and a wonderful sense of humour but she can also get a little depressed from time to time. I can always count on her to be honest and to give me the best advice.

What I like about Lan is that she has same hobbies with me. We both enjoy singing karaoke, reading comic books and going shopping. We like going to the cinema but sometimes can't agree on which movie to see. In addition since I am better in Physics, English and she is better in Maths and Chemistry, so we can always help each other if we get confused about a difficult homework assignment. We are so lucky that we get along so well. I strongly believe that our relationship is lasting forever.

N-N=0

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N+0=N

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1. Did you go on holiday by your own?
Lỗi sai: by

2. Do you think this book is many cheaper than my book?
Lỗi sai: many

Dear Tim ,

Thank you very much for your letter of May 29.I am very glad to hear that you are going to visit Ha Noi next year. It will be great to meet you! I'm looking forward to your visit .I'd like to invite you to my house so we can talk and get to know each other better. I am sure we'll have lots of fun!

I think you will need some information about the weather in Vietnam.This will help you decide whether to come here. Ha noi has 4 seasons:spring, summer, autumn and winter. In spring, it's cool, wet, and humid. In summer,it rains a lot and it's very hot and humid too.The average temperature in Ha noi is 28^oC, but sometimes it reaches 35^oC. Autumn is the most beautiful season in my opinion.The sun shines almost everyday, but it's not very hot and they are often blue sites. It's great time to go out and explore, maybe this would be the best time in your trip.

He joined the English club, _________ were over 50 years old.

A. most of its members

B. most of which

C. most of whom 

D. most of whose members

Nguyễn Huệ (1753 – 1792), còn gọi là vua Quang Trung, là người anh hùng áo vải đã đánh đổ cả hai chính quyền phản động ở Đàng Trong và Đàng Ngoài, người đã lập nên những chiến công hiển hách chống quân xâm lược Xiêm và Mãn Thanh, thực hiện được khát vọng thống nhất đất nước của dân tộc vào cuối thế kỷ thứ 18.
Nguyễn Huệ là nhà quân sự thiên tài. Trong hoạt động quân sự, ông chủ động tập trung lực lượng đánh vào những mục tiêu chiến lược trọng yếu nhất và hành động liên tục, bất ngờ, chớp nhoáng, quyết liệt làm cho đối phương không kịp đối phó.
Nguyễn Huệ còn là nhà chính trị sáng suốt. Từ mục tiêu trước mắt của phong trào nông dân là đánh đổ chế độ áp bức Trịnh - Nguyễn, Nguyễn Huệ đã vươn lên nhận thức được nhiệm vụ dân tộc là thống nhất đất nước và đánh đuổi ngoại xâm.

a) 12xy²z³ + (-6xy²z³) + 20xy²z³
= (12-6+20)xy²z³
= 26xy²z³

b) -x²yz + 12x²yz + (-10x²yz) + x²yz
= (-1+12-10+1)x²yz
= 2x²yz