完形填空。 My little sister is in Grade Eight this year. Her favorite subject is math, but she was not good 1 it. One day, a friend of my father's from America 2 her some pictures about America and 3 us to his home. My sister wanted to go to America very much, but my father said she must speak 4 very well. From then on, she 5 to work hard. She keeps 6 English for about half an hour every morning. In class she listens very carefully and 7 the teacher's questions as soon as possible. There is an American teacher in her school. After school, she often talks to her 8 English and asks her 9 help about English. Now She always says, 'My ambition is to be a diplomat.' I am 10 her dream will come true in the future. (     )1. A. with (     )2. A. bring (     )3. A. invited (     )4. A. English (     )5. A. keep (     )6. A. seeing (     )7. A. repeats (     )8. A. with (     )9. A. about (     )10. A. think B. at B. show B. take B. Chinese B. stop B. watching B. answers B. at B. with B. believe C. on C. sent C. bring C. Math C. began C. reading C. gives C. in C. for C. sure