If you had billions of dollars, would you donate almost all of it to charity? Well, that's what Mark Zuckerburg, CEO and founder of Facebook, just said he would do.
    Zuckerburg and his wife Priscilla Chan promised to give 90% of their Facebook shares to society. Right now that is about $45 billion, and they plan to donate the money to things like science and education.
    Many billionaires have done similar things. Bill Gates, creator of Microsoft, made The Giving Pledge, an activity in which billionaires promise donate more than half of their wealth to charities. This started in 2010, and now 139 people from 15 countries joined it.
    But giving back and helping others isn't just for big billionaires. People like Zuckerberg, and Gates may have more to give, but people with less are doing it, too.
    Especially around the holidays, people want to do their part and give back to people who are less lucky than them. Schools may have food collections where people bring a few food items, and together they can make a big donation to places like homeless people's homes.
    People also host special events like concerts of runs to be creative while raising money. Regular people donate whatever they can to US charities like the United Way and the American Red Cross.
    Then these charities are able to help US communities in different ways like education, health and improving the lives of the poor. These individual donations come together to make a big difference.

Do you play ping-pong?{#blank#}1{#/blank#}People in China love it.{#blank#}2{#/blank#}In a park in New York,there are two ping-pong tables.They see people come and go from afternoon to evening every day.

{#blank#}3{#/blank#}He is good at playing ping-pong."Come on!Let's play!"he always says.

Sir Joey is 70.{#blank#}4{#/blank#}"Playing ping-pong is a good habit,"he says.."It helps me to be healthy."

George loves to come,too."{#blank#}5{#/blank#} I make some friends(交朋友)here.It is great.I like to be with them."

All these people get fun (乐趣)from ping—pong.How nice!

On Saturday morning, every boy in town was happy, except Tom Sawyer. Tom's aunt said he had to paint the fence(围栏). It was thirty yards(码) long and three yards high! When he was working, some boys came along and made fun of him. 

Ben was the first one who came happily with an apple in his hand. 

"I'm going swimming," said Ben. "Do you want to come? Oh, you have to work, don't you?"

Tom got a little angry, but soon he had a wonderful idea. 

"Work?" he said. "I don't think this is work. It's fun. Does a boy get a chance like this every day?"

Ben thought about this. He was watching Tom's every move and was getting more and more interested. 

After a while, he said, "Tom, will you let me do some painting?"

"No way. You see. Aunt Polly wants it to be done properly. I'm the only one that can do it right."

"Oh, please, Tom," begged(恳求) Ben." I'll be really careful. Let me try! I'll give you my apple in return."

"Well, all right, Ben," said Tom. "But you must be careful."

He gave Ben his brush with worry on his face but joy in his heart. He started to eat Ben's apple. 

All day, boys passed by and wanted to paint. When Ben got tired, Billy began to paint. He gave Tom his favorite kite. Then Johnny gave him twelve marbles(玻璃球), and so on. 

That afternoon, Tom got many toys, and the fence got three coats of paint. Aunt Polly was so pleased when she saw the painted fence that she gave Tom a large cake!

Clothes in the following three shops are on sale. Let's have a look!

Drones（无人机）are like planes, but come in many shapes and sizes. They have no pilots and are controlled from outside the drones. During these years, they have been used to attack（进攻）enemies or moved goods（货品）in dangerous areas. 

Now small drones are part of people's lives. For example, people use drones to take photos or make videos. Besides, a drone delivery（n.投递）service has proved（证明）successful. 

Online store JD can use drones to deliver small packages（包裹）. It has built several drone stations so that it can load（装载）and deliver（v. 投递）its packages. 

Drones have made our shopping experience different. We can order a new coat in the early morning and it will be delivered before we finish breakfast. 

Bizzby Sky, a UK company, has created a delivery service for small goods. Open a smart phone app, enter your address, set a time and pay enough money for the delivery service. Then in minutes, a drone will do tasks for you. 

However, any drone company needs government permission（允许）to fly its drones in many countries. We believe we will see more and more drones with goods fly in the sky very soon. 

There are some interesting sports at the Paris Olympics. Let's learn about some of them together!

Baseball & Softball

Baseball started in the 1480s in Britain, but later it got very popular in the USA. It came to the Olympics in 1992 for the first time. Softball started in the 1880s and women's soft ball game came to the Olympics in 1996. Now it is really popular in Japan.

Many people think the two sports are the same, but a softball is bigger and softer than a baseball.

Speed climbing

Two athletes(运动员) go head- to- head to see who reaches the top of of a 15- meter- high wall first.

Lead climbing

Athletes have six minutes to climb as high as possible on a 15- meter- high wall.

Surfing

It started in Australia. There people love water sports very much. In the game , four atheltes surf at a time trying to catch the waves(浪) on their boards. The athletes should do difficult moves to win the game.