How did your grandparents go to work when they were young? By bike, I’m sure. In the 1960s and 1970s, ________ there were many bikes running on the street, we call China “the kingdom of bicycle”. I think ________ all those bikes, “ErBa” bikes were the most popular ones. But now most bicycles disappear, ________ “ErBa” bikes. People ________ to use these heavy vehicles, though bikes don’t cause pollution. The cars and the shared-bikes are on the stage of Chinese people’s life. They are more ________ and faster.

To our surprise, “ErBa” bikes become very popular in the countryside of South China. People living there grow bananas but they have ________ carrying bananas down the hills. People don’t have so much money to buy trucks (卡车), and the roads are in bad ________. Then they find “ErBa” bikes have a lot of ________, for example, the bikes don’t need energy, these bikes can carry about 150 kg bananas and it’s easy to ride on their rough (不平整的) roads. Their prices are ________. This kind of bike costs only a little money. With “ErBa” bikes, people can feed their families. But it’s dangerous for young people to rush down the hills on their bikes. Why don’t they ________ to keep safe? Wearing helmets, I think, is also necessary.

Mack Rutherford, 17, is both British and Belgian. Recently, he completed a five-month flight safely with his airplane. The teen has now set the record as the ________ person to fly around the world alone.

He flew in a small, two-seater airplane, which traveled at ________ of about 300 kph. One of the plane’s seats was replaced with an extra gas tank (油箱). It allowed him to cover ________ distances.

Mack’ s route (路线) took him over Europe, Africa, Asia and North America. He visited 52 countries ________, and crossed the equator twice — that’s required to set the Guinness World Record (吉尼斯世界记录).

Mack expected his trip to take two to three ________ at first, but later he found that he had to adjust (调整) his ideas. In some places, he had to wait a long time to get permission to fly. Besides, Mack faced lots of other ________, many of them related to bad weather.

“Crossing the Pacific Ocean was the most difficult part of the trip.” he said. ________ Mack met lots of difficulties, he never got frightened. And he ________ the trip as “completely amazing”. Mack said he hoped his trip would ________ young people they could make a difference. “You don’t need to be 18 to do something special. Just follow your dreams and they will ________ come true,” he added.