Do you like shopping on the Internet? I like to buy books online. Usually, the price isn’t very ________. You don’t have to pay a lot. When I want to know something about a book, I write an e-mail to the online shop for ________. I am shy. It is difficult for me to talk to the shopkeepers in real shops.

Sometimes online shops have pictures of the book. They can show you some pages of the book, too. I think this is very ________. I don’t like to read books in shops because the shopkeepers may come and talk to me. I don’t know ________ to say to them.

I can shop at midnight ________ I want to. Real shops close at nine o’clock in the evening. Some people may worry that the postman may lose or damage（损坏）the things they ________ from online shops, but I don’t worry about that. I think it is hard to damage a book and most of the postmen are very careful.

Some people say that shopping in real shops is good because you can go with your friends and ________ many different things. They call this window shopping. I don’t have any friends and I don’t like to talk too much—it makes me ________.

I am ________ my grandmother how to shop online. She cannot walk very far so it will make shopping easy for her if she shops online. My brother ________ wants to learn how to do it. He is very busy most of the time. When he has a little free time, he can shop online.

Vending machines（自动售货机）are very popular now. You can find them here and there. People can buy different things from them, like snacks and soft drinks. Now we can even buy train tickets from it in the train station.

They also sell（卖）newspapers in some busy areas. In some places, you can get a can of beer（啤酒）or Coke from the vending machine, but in some others, you can’t.

Some vending machines sell cigarettes（香烟）. They are called “cigarettes machines”. With these machines, people can get cigarettes easily. These machines were popular in the United States. But they are not good for children. So you can’t see them now. In many areas in the United States, only some clubs and bars（酒吧）have cigarette machines, because children can never get into these places.

How does a vending machine work? If you want to buy a can of Coke, you can find its price on the machine. Put the money into the machine, and push the button of the Coke, then you can get your Coke and change. A vending machine makes our life easy and interesting.

Li Ruyan, 13 and his classmates in Shanghai did something special last summer. They worked in groups with traffic police at different crossroads in the city. Holding small red flags, the students helped keep order and stopped people from jaywalking（乱穿马路）.

As part of the school project. Li’s school has encouraged（鼓励）its students to do more community work.

After the half day of exhausting（累人的）work Li told himself not to jaywalk anymore.

“I think through community work we get to help others and, more importantly, we grow a sense of responsibility（责任感）,” he said.

Community service is an important part of education for teenagers around the world. In the US and Canada, high school students need to finish 40 hours of community service before graduation. For those Americans who have finished 1,400 hours of community work, they can get nearly $5,000（33,000 yuan）.

Chinese students today do more community work, too. For example, starting from 2010, Sichuan high school students have been asked to do 10 days of community work. It will become part of their school grade.

Qian Lijun, 16, and her classmates in Suzhou, Jiangsu went to a local elder care home this winter. They put Spring Festival couplets（对联）on the walls and cheered up the people living there.

Li Xiaotian, 15, of Anshan said he used to clear flyers（小广告）from telephone poles（电线杆）with his classmates. They brought tools, towels and buckets and worked for three hours under the summer sun. “It was tiring, but seeing the clean poles without ugly ads—we really felt proud,” he said.