Choose the words or expressions and complete the passage.Shen Dacheng, now 19 years old, lost his legs in a traffic accident when he was only six. When he grew up little by little, seeing other 1 running around, he felt envious（嫉妒） of them. 2 legs,Shen's childhood was terrible and he didn't like talking with others About one year ago, Shen watched a parkour*（跑酷，时下风靡全球的时尚极限运动） video. He enjoyed watching these 3 movements in the video. He said to himself, "They're so cool. I will feel more confident（自信） 4 I can do those moves."
From then on, he began to practice 5 every day. He hopes that he can 6 a happy life in the future. The young man has impressed（留下深刻印象）many people by 7 his arms to hang his body in the air and keep balance.
Thanks to extreme sports, Shen has made many close friends with the same interest.
