When I was young, I     1     (use) to keep a notebook. I wrote many poems and drew many pictures of different     2     (invention) in it. They     3     (be) not very good, but they helped me think and dream. Now I am a famous     4     (science) and I do many important things. However,     5     (I) journey began when I was at school. I was a student just like you. Perhaps you will do something important or even become famous one day. Just remember     6     (think) and to dream. I am sure you will     7     (success)!