找出下列句子存在的问题并改正。 1) When I was on the stage the next day, I felt so nervous as I shook like a leaf. 2) There were such many people present! 3) Suddenly, I caught a sight of my English teacher in the crowd. 4) She was smiling but nodding at me. 5) I remembered her words and calm down. 6) I did a good job and beat the first prize. 7) Now my picture and the prize is hanging in the library. 8) Whenever I see them I will often think of my English teacher. 9) I used to love science class—all of them—biology, chemistry, geography and physics. 10) I think I like those classes because I feel that it helps me understand what the world works. 11) When I was a child, the rain was a mystery (奥秘). 12) There is always more mysteries look into. 13) After learn the basics of the subject, nothing else seemed very practically to me. 14) I never saw what I could use it in my daily life. 15) Like most of my schoolmates, I have either brothers nor sisters. 16) In any other words, I am an only child. 17) My parents will do all they can make sure that I get a good education. 18) They did not want me to do any work at family; they want me to devote all my time to my studies so that I’ll get good marks in all my subject. 19) We may be one family and live under a same roof, but we do not seem to get much time to talk about together. 20) It looks as if my parents treat me as a visitor and a guest.