完形填空。      When I was a boy of twelve, something stopped me forever from putting any wild creatures in a cage.
     We lived in a village. Every evening the mockingbirds (仿声鸟) would come and    1   in the trees and sing.
No musical instruments can produce a more    2   sound than the songs of the mockingbird.
     I decided to    3   a young bird and keep it in a cage so that I would have my own private    4   .
     Finally I managed to catch    5   and put it in a cage. At first, the bird moved wildly about in the cage, but at
last it    6   in its new home. I felt very pleased    7   myself and looked forward to some beautiful    8   from my
little musician.
     On the second day, my new pet"s    9   flew to the cage with something in her mouth. the baby bird   10   
everything she brought to it. I was pleased to see this.    11   , the mothe r knew better than I about how to   12
 her baby. the following morning    13   I went to see how my bird was doing, I was shocked to find it on the
floor of the cage,   14   I had taken good care of it, but   15  had happened?
     Arthur Wayne, a famous scientist, happened to be visiting my fathe r at the time. Hearing me crying over
the death of my bird, he   16  what had happened."A mothe r mockingbird, finding her young in a cage, will
sometimes bring it    17  food. She thinks it better for her young to  18  than to live in a cage."
         19   the n I have never caught any living creature and put it in a cage. All living creatures have a    20   to
live free.

(     )1. A. laugh        (     )2. A. healthy      (     )3. A. change       (     )4. A. musician     (     )5. A. it           (     )6. A. settled down (     )7. A. to           (     )8. A. looking      (     )9. A. sister       (     )10. A. refused     (     )11. A. Fortunately (     )12. A. feed        (     )13. A. when        (     )14. A. crying      (     )15. A. how         (     )16. A. asked     (     )17. A. delicious   (     )18. A. grow        (     )19. A. After       (     )20. A. right

B. rest                B. beautiful       B. steal               B. gardener          B. that             B. dressed up     B. with               B. dancing             B. friend             B. found              B. Particularly      B. love             B. after                B. dead              B. why           B. talked                  B. dangerous        B. die                B. Before           B. chance

C. sleep                C. meaningful   C. catch           C. actress           C. this               C. set up        C. by              C. singing         C. mother         C. drank               C. Probably      C. teach         C. before           C. mad             C. when         C. explained               C. poisonous     C. give            C. Until            C. mother

D. jump                     D. funny              D. buy                   D. doctor             D. one                     D. turned down     D. for                  D. talking            D. daughter           D. ate                      D. Surely           D. visit              D. until               D. dying              D. what                 D. spoke                     D. serious            D. sleep                D. Since               D. friend