完形填空。 Bob is 1 American boy. He studies in a high school in Washington. He is fourteen years old and he is in Grade 8 now. Bob wa s born 2 1984 in New York. He started school at th e age of six. He studied in a primary school in New York for six years 3 he moved to Washington 4 his family. He 5 in this high school for about two years. Bob's favorite subject is biology and he is 6 in Chinese herbs. He wishes 7 to China 8 Chinese medicine 9 he finished high school. He wants to 10 a doctor of Chinese medicine. (     )1. A. a (     )2. A. in (     )3. A. after (     )4. A. and (     )5. A. studies (     )6. A. interested (     )7. A. come (     )8. A. study (     )9. A. when (     )10. A. is B. an B. on B. when B. or B. studied B. interesting B. to come B. studying B. afte r B. be C. the C. at C. before C. but C. has studied C. interest C. coming C.  studies C. before C. becomes D. / D. for D. until D. with D. is studying D. interests D. comes D. to study D. until D. are