I've been farming sheep on a hillside for 54 years. I use a small tractor to get about. My dog Don always sits beside me in the passenger scat.

One morning l 36 a lost lamb when I was in the top field，near where a motorway cuts through my land. 'The lamb had become separated from its 37 ，so I jumped out of the tractor to 38 it while Don stayed in his scat.

Lamb and mother 39 ，I turned back to the tractor only to see it move suddenly away from me. 1his was so 40 because I had put the handbrake on when I jumped out. 41 Don had somehow made the 42 move.

My heart froze in my chest as I 43 the tractor heading towards the 44 .I ran desperately but failed to 45 . It crashed through a wooden fence and disappeared. The 46 thing I saw was Don's face，looking calmly back at me.

Heart in mouth，I 47 the fence and looked over. The tractor was 48 against the crash barrier in the central reservation，having miraculously(奇迹般地)crossed the 49 road with fast-flowing traffic. I couldn't see Don，but as I 50 the tractor he jumped out onto the road，apparently 51 ，and dashed back to me.

The police 52 and the motorway ran normally again. I couldn't quite believe my 53 it turned out no one got badly hurt，but the outcome could have been 54 .Don was given a special 55 that night-I didn't want him thinking I was angry with him.

( )36. A. dropped B. spotted C. carried D. returned

( )37. A. kids B. friends C. owner D. mother

( )38. A. ask about B. play with C. tend to D. run into

( )39. A. freed B. switched C. reunited D. examined

( )40. A. unexpected B. dangerous C. embarrassing D. difficult

( )41. A. Fortunately B. Generally C. Immediately D. Obviously

( )42. A. lamb B. vehicle C. seat D. fence

( )43. A. saw B. stopped C. remembered D. drove

( )44. A. crowd B. motorway C. field D. hill

( )45. A. take off B. catch up C. hold back D. get out

( )46. A. real B. best C. basic D. last

( )47. A. fixed B. noticed C. reached D. closed

( )48. A. resting B. running C. parking D. turning

( )49. A. sleep B. long C. rough D. busy

( )50. A. abandoned B. approached C. recognized D. repaired

( )51. A. unclean B. uncertain C. unhurt D. unhappy

( )52. A. arrived B. replied C. survived D. waited

( )53. A. ability B. dream C. luck D. idea

( )54. A. common B. confusing C. desirable D. awful

( )55. A. meal B. test C. job D. lesson