Read the text and fill in the gaps with the correct missing word. Many teenagers these days 1)around. Instead, 2)use buses and trains to getchoose bikes, skateboards, scootersand even rollerblades to travel to their destination, In the past, teenagers only used these things to play in the park or in sportscompetitions, but now it's a new craze to use them as a means oftransport.These 3)good forms of exercise, but accidents can happen.so you must pay attention to a few rules of the road. First, you mustalways use proper safety equipment such as knee and elbow pads4)helmets. When possible, try to stay on 5)pavement and ride slowly. Also, never wear headphones, don't ridetoo close to parked cars and always get off 6)skateboard, bike or scooter and walk at pedestrian crossings. Finally, you mustnever use a moving vehicle to pull you along!Skateboarding, rollerblading or other activities are good ways toexercise and a lot of fun. Just remember to pay attention and staysafe when 7)are out and about!​

The US situated in central North America.2. It is washed by the Pacific Ocean, Atlantic Ocean, the Carribian Sea and the Gulf of Mexico.3. The US has almost every kind of weather.4.  The US  has many kinds of land — rocky coasts, dry empty deserts, big rivers, wide plains and grasslands, lakes of all sizes, high mountains, great forests, sunny beaches, lands of endless winter.5. The population of the country is more than 250 million.6.The Grand Canyon, Yosemite Valley, and Yellowstone are among the most famous places to enjoy the beauty and power of wild America.7. The mighty rivers of America are Mississippi, Colorado and Missouri.8.A big mountain chains are the Appalachians and the Rocky Mountains9. The Grand Canyon attracts people because it is very big and  beautiful with  different kinds of plants and animals on opposite sides of the canyon. It looks different at different times of day and in the winter it is covered with snow.10. People say that the US is a young country because It’s only been independent for around three hundred years.11.  Americans have tried to save many of the most beautiful wild areas of the United States. There are a lot of parks, forests and wildlands where they  can enjoy the beauty and power of wild nature.12. I think that the U.S. isa "melting pot" because many different social groups from different religious, ethnic, racial and cultural backgrounds have chosen to live here.