完形填空。      You must know the "ding dong ditch". Person A rings Person B"s doorbell, and then quickly runs away
or hides before Person B answers. Person B hurries to answer the door, only to find that no one"s there.
After the    1  thing is repeated several times, this is called "ding dong ditch".
     Sharon Mardis, a single mother of four, told ABC News that she    2  a "ding dong ditch" when she    3 
to her door at 1:00 am last night.
     "My doorbell started ringing,    4  I came to the door," Sharon told ABC News. "There was    5    at the
door. I went back in the house. I got ten or twenty    6    and the doorbell started ringing again. I came back to the door, still nobody at the door." She got    7  and stepped outside, shouting, "Who"s that? What on
earth are you going to do?" There was just    8  .
     But after Sharon returned to the house, she    9  something. Smoke! Sharon quickly    10    her kids and
the family pets and ran out of the house. Only then did she   11   how bad the fire was. The    12  of the
house fell down; the house was quickly    13    by flames. The smoke detectors (探测器) had never   14  :
they were out of batteries. Good thing for the doorbell.
     The    15    is who had rung it.    16    found that the flames has fused (熔化) the wires of the doorbell
together, causing it to ring. But     17  , the fire had nothing to do with the doorbell wiring at all. It had
started in the bathroom, well down the hall. From there, the flames didn"t spread to the nearby   18 , where
the children and Sharon were sleeping.   19 , they surprisingly reached the doorbell first, making it ring
repeatedly, and   20 Sharon to avoid danger.
Sharon believes it happened that way thanks to an angel.

(     )1. A. special     (     )2. A. experienced (     )3. A. fell         (     )4. A. though       (     )5. A. somebody     (     )6. A. miles       (     )7. A. tired       (     )8. A. cry         (     )9. A. hit         (     )10. A. gathered   (     )11. A. wonder     (     )12. A. paintings   (     )13. A. covered     (     )14. A. moved off   (     )15. A. fact       (     )16. A. Nurses     (     )17. A. fortunately (     )18. A. kitchen     (     )19. A. Instead     (     )20. A. ordering

B. same           B. followed       B. turned         B. but           B. nobody         B. centimeters   B. angry         B. noise         B. touched       B. settled       B. dream         B. roof           B. separated     B. left off       B. opinion       B. Firefighter   B. strangely     B. hall           B. Therefore     B. encouraging

C. important   C. learned     C. responded   C. because     C. something   C. feet         C. worried     C. silence     C. heard       C. comforted   C. realize     C. lights       C. blocked     C. taken off   C. mistake     C. Teachers     C. honestly     C. bathroom     C. Thus         C. warning

D. serious     D. practiced   D. returned     D. and         D. nothing     D. kilometers   D. interested   D. laugh       D. smelled     D. frightened   D. agree       D. floor       D. stopped     D. gone off     D. question     D. Doctors     D. clearly     D. bedroom     D. Then         D. advising