完形填空。 My first day at school was unforgettable (难忘的). I  was  so 1 that I  didn't sleep well the  night before. My mother 2 me to school on  the  first day.   A teacher came  and led me and other children to the classrooms. Some children began  to cry because their 3 couldn't go into the classrooms with  them.  I didn't cry, 4 I had been to a kindergarten (幼儿园) before. My mother 5 a moment later. When I 6 the classroom, one of my classmates came to talk to me. It was a happy 7 for me to get to know my new classmates. We  laughed  and played 8 .  Once  in  a  while  the teacher had to 9 us to keep quiet as we were making too much noise. Finally the bell rang for us to go home. I was glad to see my mother 10 for me at the school gate. It was a wonderful first day at school. (     )1.   A. sad (     )2.   A. introduced (     )3.   A. parents (     )4.   A. so (     )5.   A. had lessons (     )6.   A. left (     )7.   A. game (     )8.   A. quietly (     )9.   A. want (     )10. A. asking B. excited B. invited B. teachers B. and B. went to school B. cleaned B. time B. slowly B. tell B. waiting C. quiet C. wished C. children C. because C. went home C. entered C. interest C. quickly C. help C. standing D. bored D. took D. pupils D. also D. left home D. visited D. subject D. happily D. join D. buying