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阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
I was nine years old when I learnt to ride a bike. The bike was a birthday present from my uncle. You can imagine how 1 (excite) I was when I saw the bike, and I begged my uncle to teach me how 2 (ride) it right away. However, before I got on the bike, I felt 3 (extreme) nervous and I was afraid that I would fall off and hurt 4 (me). My uncle held onto the seat and helped me to get 5 the bike. While I was riding, he was running along beside me, holding the seat so I would not fall over. I was so 6 (grate) to him for his help.
As I was practicing, I became more and more confident. Then, I heard my uncle shouting, "You are riding it by yourself now!" I was both excited and scared. I was really riding by myself, but 7 if I fell off? Could I use the brakes to stop? As I was wondering about this, my uncle ran after me and got hold of the bike. I 8 (slow) down and came to a stop. My heart was still beating fast when I got off the bike. 9 that day, having learnt how to get on the bike and get off it, I felt like I was walking on air! I am still thankful to my uncle for teaching me to ride a bike on my 10 (nine) birthday.
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