完形填空。 One summer evening I was sitting by the open window, reading a good science storybook. I was so 1 the story I was reading that I didn't 2 that it was getting dark. When I realized that it was too dark for me to read 3 , I put the book down and got up to turn on the light. Just then I heard someone 4 , 'Help! Help!' It seemed to come from the trees at the end of the yard. I looked out but it was too dark to 5 anything clearly. Almost immediately I heard the cry again. It 6 like a child, but I could not 7 what someone would be doing in our backyard, unless one of my neighbour's children had climbed a tree and had not been able to 8 . I decided that I ought to go out and have 9 in the yard, just in case someone was 10 . I got a flashlight and a stick, which I thought might be useful. With these in my hands, I went out 11 the yard. Once again I heard the cry and this time there was no doubt that it came from the trees at the far end of the yard. 'Who is there?' I 12 as I walked across the yard towards the trees. But there was no 13 . With the help of my flashlight, I 14 all over that end of the yard, including the branches of the trees. There was no 15 of anybody or anything. I came to the conclusion that my 16 made fun of me, probably because of the strange creatures (生物) on another 17 which I read about in the story. I had to go back into the house and put the stick and flashlight away. I had just sat down to read my book again when I was 18 by the cry of 'Help! Help!' This time it was from right behind me! I dropped my book and 19 . There, sitting on the table was my neighbour's large green and red 20 . (     )1. A. worried about (     )2. A. mind (     )3. A. quietly (     )4. A. shouting (     )5. A. listen (     )6. A. sounded (     )7. A. question (     )8. A. hurry off (     )9. A. a look (     )10. A. at work (     )11. A. forward (     )12. A. sang (     )13. A. noise (     )14. A. searched (     )15. A. seat (     )16. A. neighbour (     )17. A. world (     )18. A. called (     )19. A. jumped up (     )20. A. cock B. interested in B. hope B. quickly B. laughing B. feel B. looked B. imagine B. send away B. a rest B. in shock B. onto B. called out B. sound B. touched B. sign B. imagination B. country B. told B. sat up B. hen C. surprised at C. notice C. noisily C. speaking C. see C. smelt C. choose C. come off C. a sleep C. on holiday C. into C. whispered C. voice C. cut C. place C. brother C. planet C. encouraged C. rang up C. parrot D. tired of D. expect D. easily D. talking D. find D. tasted D. understand D. get down D. a walk D. in trouble D. backward D. read D. answer D. beat D. sort D. dog D. satellite D. frightened D. knocked down D. chicken