完形填空。 It was a cold winter morning. Half asleep at the train station, I stared into the distance, 1 for the train to take me to my 2 in Boston. The world was quiet. The very few people on the street kept to themselves, 3 their steaming cups of coffee. Reaching into my pocket as the 4 was approaching, my numb hand searched for the $20 bill to pay my fare. The pocket was 5 ! I searched through my bag and then I felt 6 . Unless the money dropped from the sky, I'd be 7 there. 'What' s the matter?' A short, elderly man stood before me. 'Oh, nothing...Well, I 8 my money and now I can't pay for the ticket. I'm going to 9 my match class, and the train is leaving.' 'Here, use this.' The man held a $20 bill. I looked up, 10 . People just didn't do that anymore. Everyone worried about their own 11 , rarely stopping to think about others, especially teenage strangers. 'Thank you, but no, I can't.' ' 12 it-go!' The man pushed me 13 the train. I bought a round-trip ticket, and he refused the change I 14 to give him back. I did not know what to say-a million thoughts raced through my mind, yet I stood 15 . For the train ride I was silent. I began to see the world through 16 eyes. That man made a difference with such a simple 17 . A week later I was at the train station again, with an extra $20 18 I saw the man. And there he was. 'Excuse me, sir, I believe I owe you this.' I 19 the money into his hand. Failing to refuse, he said, 'Just remember to do the same for someone in your shoes someday.' I smiled, content. The elderly man is my hero. For many, heroes are famous, but my hero is a 20 stranger who taught me a lesson in life. I will never forget his kindness. (     )1. A. watching (     )2. A. home (     )3. A. serving (     )4. A. chance (     )5. A. deep (     )6. A. hopeless (     )7. A.blocked (     )8. A.wasted (     )9. A.miss (     )10. A.frightened (     )11. A.problems (     )12. A.Seize (     )13. A.in (     )14. A.offered (     )15. A.unconsciously (     )16. A.curious (     )17. A.task (     )18. A.so that (     )19. A.dropped (     )20. A.giving B. looking B. class B. carrying B. crowd B. empty B. useless B. drawn B. counted B. skip B. disturbed B. complaints B. Get B. beyond B. managed B. silently B. changed B. act B. even if B. pushed B. encouraging C. reaching C. office C. minding C. driver C. messy C. relieved C. stuck C. spent C. fail C. surprised C. positions C. Catch C. toward C. happened C. seriously C. bright C. example C. now that C. pressed C. promising D. arranging D. factory D. making D. train D. tight D. dissatisfied D. tied D. lost D. stop D. concerned D. challenges D. Take D. on D. attempted D. uncomfortably D. widened D. performance D. in case D. placed D. respecting