Do you know what American students do in class? Here are 1 . American classroom customs.

If the teacher asks you a question, you should give the 2 immediately. If you do not understand the question, you should 3 you hand and ask the teacher to repeat the question. If you do not know the answer, it is all right 4 the teacher that you do not know.

Be 5 time! It is 6 to be late. If you are late, be sure to enter the classroom 7 .Have your books and papers out of your bag before you come 8 the classroom. Then go to your seat and sit quietly. In America, it is not necessary to knock 9 you enter the classroom. Most teachers will give you a low grade if you are often late.

In America, you should call your teacher by his or her last name, not "teacher". Also you should use Mr, Miss, Ms or Mrs. before the 10. This is polite. The teacher will tell you the title that he or she likes.

How much do you knowabout Beethoven? He was {#blank#}1{#/blank#}(bear) in Bonn, Germany, in 1770. He was poor and sick. In 1792, he moved {#blank#}2{#/blank#}. Vienna, Austria tostudy with Austrian composer Joseph Haydn. Soon Beethoven played music that he wrote{#blank#}3{#/blank#}(him). He became a {#blank#}4{#/blank#}(success) musician. {#blank#}5{#/blank#}(unlucky), he started to lose hearing {#blank#}6{#/blank#} he was in his twenties. Butthis didn't stop Beethoven from {#blank#}7{#/blank#} (walk) on in his life. Hewent on writing music. He wrote short and long {#blank#}8{#/blank#} (piece), sad ones andhappy ones. He composed 300 pieces during his lifetime. He {#blank#}9{#/blank#} (write) some of hisbest, his most beautiful pieces after he became deaf. The works of him arefamous all over the world. They are still popular {#blank#}10{#/blank#} music fans today.

It's often believed that only grown-ups can make a difference. Is it true? Teen Vogue interviewed some {#blank#}1{#/blank#}(teenager) across the world.

16-year-old Michael started using social media {#blank#}2{#/blank#}(cheer) up teenagers of his age to follow their dreams on his baseball blogs (博客). Michael also {#blank#}3{#/blank#}(write) about sports people and how they faced their challenges.

Lesein,14 years old, {#blank#}4{#/blank#}(one) learned about climate change when he was twelve years old. {#blank#}5{#/blank#}(he) home country of Kenya loses about 29,650acres(英亩) of forest each year.

Alexis Lewis, a 15-year-old inventor, designed a simple wheelchair with bamboo to help poor people {#blank#}6{#/blank#} need to transport (运送) children many miles to hospitals. Another invention of his is a special mask (面罩) which can {#blank#}7{#/blank#}(throw) through a window of a smoke-filled building to people inside. Alexis said,"People are dying because they can't be saved {#blank#}8{#/blank#}time. And I love physics and I use it to improve technologies."Alexis also told our reporter that he wanted children to know that a small dream can make {#blank#}9{#/blank#} big change to the whole world.

These young people are {#blank#}10{#/blank#}(certain) shining examples to show you're never too young to make a difference. Heroes can come from youngsters.

I am David. My home town, Bao Loc, is just a small town in Vietnam (越南). But for me, it's really a paradise (天堂). 

The weather is very comfortable. It's not very hot or cold. In the centre of the town, there is a beautiful lake. You can lie on the bank (河岸) and see the white clouds in the blue sky or count (数) the stars at night. You can go there just to relax when you have a lot of things to think about. One of the most famous places is Dambri Waterfall (瀑布). You can enjoy this beautiful waterfall if you come. Don't forget to take some pictures with your camera. 

Bao Loc is very small. It will take you 45 minutes or 1 hour to go around this town. It's so small that people here know each other. They are very friendly. 

Tea and coffee are Bao Loc's local food. I think you will like them very much. 

Why does Bao Loc become a paradise? Because my family are here and they always make me feel warm and safe.

Welcome to my home town Wenzhou. Wenzhou is a city with {#blank#}1{#/blank#} long history. It has a population of about 9.67 {#blank#}2{#/blank#}(million). It is a popular tourist attraction (旅游胜地). It is as {#blank#}3{#/blank#}(popular) as Shaoxing. The weather here is not too hot {#blank#}4{#/blank#} too cold, and you can come at any time of the year. 

In recent years, there have been some great{#blank#}5{#/blank#}(change) there. A large number {#blank#}6{#/blank#} people have moved here, so the population is much {#blank#}7{#/blank#}(large) than before. Now, tall buildings and factories have replaced (代替) the {#blank#}8{#/blank#}(hill). So there are a lot of environmental (环境的) problems. We should do something to protect (保护) our city. The more we protect, the {#blank#}9{#/blank#}(great) our life will be. I believe Wenzhou will be {#blank#}10{#/blank#}(nice) than ever in the future. Let's wait and see!