完形填空。 When I was young, I was very embarrassed (尴尬) to be seen with my father. He was disabled and very short, and he 1 with great difficulty. When we walked together, with his hand on my arm for balance, people would 2 . I would be nervous about the unwanted 3 . It was 4 for us to walk in step, and because of that, we didn't say much as we went 5 But as we started out, he always said,' You set the pace (步幅). I will try to follow you.' Our usual walk was to or from the subway, which was how he got to work. He never missed a day, and would 6 it to the office even if others could not. He 7 talked about himself as an unhappy man, nor did he show any envy (嫉妒) of the more fortunate or able. What he 8 in others was a 'good heart,' 9 if he found one, the owner was good enough for him. He has been gone many years now. I wonder if he felt I didn't 10 to be seen with him during our walks. If he did, I am sorry I never told him how 11 I was. I think of him when I complain about life, when I envy another's good fortune, and when I don't have a 'good heart'. At such times I put my hand on his arm to get back my 12 , and say, 'You set the pace. I will try to follow you.' (     )1. A. walked (     )2. A. listen (     )3. A. invitation (     )4. A. possible (     )5. A. along (     )6. A. try (     )7. A. only (     )8. A. thought of (     )9. A. and (     )10. A.care (     )11. A. proud (     )12. A. luck B. spoke B. look B. information B. important B. away B. get B. never B. learned about B. but B. enjoy B. nervous B. balance C. played C. talk C. expression C. difficult C. alone C. make C. once C. depended on C. now C. hate C. sorry C. chance D. studied D. stand D. attention D. necessary D. around D. keep D. also D. looked for D. then D. like D. sad D. purpose