完形填空。 I know a black boy called l . His father is a farm worker. He works in a big 2 in the middle of America. Tom's parents work hard for the family day and night,but they get _ 3 money. So they are _ 4 . Tom _5 a younger brother, Jack and a younger sister, Su-san. The family need Tom's help. On weekends Tom 6 play in the park with other 7 . He has 8 at home to look after his sister, or help his parents 9 their work. Tom is such a twelve-year-old boy. Tom knows China,' How happy the 10 children are ! ' He often says, 'I like this country very much, I will go there one day. ' (     )1.  A. Mary (     )2.  A. library (     )3.  A. much (     )4.  A. rich (     )5.  A. has (     )6.  A. can (     )7.  A. children (     )8.  A. to study (     )9.  A. in (     )10.A. Chinese B. Tom B. hospital B. many B. poor B. have B. can't B. child B. to play B. on B. Japanese C. Jack C. school C. a little C. old C. is C. must C. friend C. to work C. with C. American D. Susan D. farm D. little D. young D. there is D. only D. classmate D. to stay D. for D. English