完形填空

　　When I was a little girl, mum and dad told me that if you plant something in spring, you'll get more in autumn．I 　　1　　 this without doubt．

　　At the age of six, while I was eating a big apple, I dropped a tooth．

　　I was so 　　2　　 that I cried all of a sudden and rushed to my grandma's room．She held the tooth and smiled, “Don't worry, dear．It's a baby tooth．You will have a new tooth in a few 　　3　　．”

　　“A new tooth?” I fell very surprised．

　　“Yes, you will have that tooth 　　4　　 you get old, so you must protect your new tooth well．When you grow old, the teeth will fall out again,　　5　　 this time, it won't grow again．So it's not easy for old people to eat anything,” grandma said．

　　I went out of grandma's room and thought, “　　6　　 should I put the dropped tooth?”

　　Suddenly, a wonderful thought came into my mind：Why not plant it in the ground? If I took good care of it, day after day, maybe it would become a big tree．When 　　7　　 came, there would be many white and strong 　　8　　 on the tree．I could pick them and send them to the 　　9　　 people who needed them．So then they could eat well and always open their mouths with a smile full of beautiful teeth．

　　Of course my tooth didn't grow into a big tree, but beautiful thoughts made my childhood warm and unforgettable．With them, I 　　10　　 up．

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