阅读下列短文，从短文后各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。 A poor girl was selling flowers in the street 21 Christmas Eve. Her parents were ill, so she 22 get money for food. It was very cold. The girl felt cold and hungry. She stopped 23 a beautiful house. The girl knocked 24 the door and a man came out. She asked 25 he needed some flowers. The man said he didn't want 26 . She left the house and felt tired. She sat down at the 27 of a tall wall. She looked 28 the flowers. 'Ihe flowers 29 very nice. She suddenly had an unusual feeling. She felt she became light, 30 slowly she began to fly into the sky. She 31 higher and higher and at last she found herself on the clouds. A group of people were coming to meet her. At the head of them 32 her granny. She welcomed her and asked her why she didn't 33 .The girl told her that she had to 34 to get money became her parents were badly ill. Granny told her 35 and gave her lots of beautiful clothes and delicious food. The girl laughed 36 . It snowed 37  t hat night. The girl died 38 a smile on her face. 39 , people in the beautiful house began to sing Christmas songs and 40 . 21. A.  in 22. A. could 23. A. in front of 24. A. at 25. A. what 26. A. some 27. A. head 28. A. for 29. A. feels 30. A. and 31. A. went 32. A. has 33. A. get money 34. A. fly into the sky 35. A. didn't worry 36. A. happy 37. A. heavily 38. A. had 39. A. By the way 40. A. looked after the girl B. on B. had better B. in the front of B. to B. why B. any B. foot B. up B. felt B. but B. got B. was B. go out B. come here B. not to worry B. happier B. heavy B. has B. At the same time B. talked about the girl C. at C. would like C. behind C. in C. if C.  nothing C. top C. (不填) C. smelt C. so C. looked C. had C. come to see her C. sell flowers C. to not worry C. happiest C. largely C. with C. except the girl C. enjoyed themselves D.（不填） D. had to D. beside D. for D. when D. something D. middle D. at D. smells D. or D. flew D. were D. stay at home D. help others D. to worry not D. happily D. strongly D. without D. By way D. watched themselves