Teaching second grade is always a challenge. Each student arrives at school with his own needs and difficulties. One year a student called Billy _31__me with his behavior as well as his academic requirements. He struggled daily with his __32__emotions and often became angry or violent. I knew that, to make __33__progress，his emotions needed controlling.
One __34__I tried to help Billy was to have him come directly into the classroom when he arrived at school. Billy's mom would __35__me to alert(警告) me to a particularly emotional morning at home. Then, I would focus on __36__his anger and calming him down before the other students arrived.
One week our class was studying __37__.I thought one way to bring learning into the classroom was to bring my dog Rocky to school for the day.
That day began as normal. I was preparing activities focused on dog themes __38__I was told that Billy had a __39__morning at home and I might need to get him __40__. As I was talking to his mom，Billy __41__into the classroom. To Billy's__42__, Rocky immediately ran up to his new__43__, wagging his tail and licking Billy's face with doggy affection. Billy couldn't __44__Rocky's charm(魅力)and began laughing as his anger melted away.
Throughout the day，Billy never left Rocky's side, feeding him, being gentle with him and even __45__the other students while Rocky was sleeping.
Billy was known for doing anything he could to avoid__46__, but on this day he found a good dog story, “ Clifford's Puppy Days”, and read it to Rocky. How __47__I was at the sight of Billy reading happily! My little dog was able to __48__ Billy's day from one of anger and frustration to one of laughter, gentleness and __49__.
That day Rocky more than helped me with my__50__; he helped to change the life of a child！After that Billy's behavior definitely improved.
31. A. challenged B．cheated C．benefited D．betrayed
32. A. unforgettable B．uncontrollable C．unconscious D．unfortunate
33. A. physical B．mental C．academic D．hard
34. A. advantage B．arrangement C．reason D．way
35. A. awake B．call C．visit D．sign
36. A. tolerating B．observing C．relieving D．ignoring
37. A. emotions B．pets C．plants D．diet
38. A. after B．as C．when D．before
39. A. boring B．enjoyable C．busy D．rough
40. A. settled B．punished C．treated D．excited
41. A. skipped B．stormed C．jogged D．floated
42. A. surprise B．delight C．shame D．fear
43. A. protector B．trainer C．friend D．owner
44. A. resist B．describe C．reduce D．forget
45. A. educating B．envying C．comforting D．quieting
46. A. punishing B．reading C．arguing D．apologizing
47. A. surprised B．disappointed C．amused D．confused
48. A. urge B．shorten C．change D．devote
49. A. admiration B．curiosity C．anxiety D．love
50. A. family B．teaching C．housework D．performance