Airplanes are the newest kind of transportation. From early times, people tried to f 1 through the sky like birds. About 100 years a 2 , someone took the first ride on an airplane. This ride lasted for less than one m 3 . These first planes were very s 4 , too. Only one o 5 two people could fly in them at one time. Today these p 6 are very big and fast. H 7 of people can travel in them at one time. W 8 them, people can get f 9 one side of the United States to the other in less than one day. Traveling is very d 10 from the way it was 100 years ago. 1._____ 2._____ 3._____ 4._____ 5._____ 6._____ 7._____ 8._____ 9._____ 10._____ |