chiều dài hình chữ nhật là

     60-20=40(m)

           đáp số:40m

Favourite kind of music:

Most people like music and so do I. I like music because it is my favourite entertainment in my free time. Moreover, music is good for my spiritual relaxation and helps release my work-related stress. My favourite music genre/style is POP due to four reasons.
Firstly, I am most spiritually relaxed by listening to POP music as it makes me feel excited and comfortable. For this reason, I listen to it every afternoon.
Secondly, it makes me more positive and active so that I can do my works better.
Thirdly, by sharing the common interest in POP music, I can make a lot of fiends around the worlds without the need of speaking their own language.
Finally, I believe that listening to POP music makes me smarter in my daily activities.
Different people have different taste in music but I think POP music is the most popular and has the largest number of fans. In America, Taylor Swift is the top POP singers with thousands of followers including me. Nevertheless, there are so many kinds of music in this world and I believe all of them are good in bringing people closer and making people love their lives even more.

2005

I'm going to describe my primary school which is very near my house. It take me about 10 minutes from my home to school and it also next to my high school.
In Vietnam, we go to primary school at 6 years old and it is the same to me.
In summer, I could collect a lot of phoenix flowers and push in my note books, and then I gave it to my best friend like a gift. My memory about teachers in that school is unclear now but I still remember my third grade teacher. The reason is she usually wore Ao Dai with a modern collar which could show her neck and a little of her shoulder. And she is the only person who gave me a seat on special class for outstanding student.
One of important things I love my childhood at that school because I met my ex-best friend from there, we played, we learned, we laughed, we ate together. Besides that, my school used to be a hospital in war, so that we talked about a lot of ghost stories, dared each other and our classmates to go to girl toilet at twilight.

I can conclude that I love my school because all my special memories was there.