65. (2007 辽宁卷D)You can't imagine what difficulty we had ______ home in the snowstorm.

A. walked　　　　 　　　B. walk　　　　 　　　　　C. to walk　　　 　　　　　D. walking

64. (2007 辽宁卷C)The crowd cheered wildly at the sight of Liu Xiang, who was reported ______ the world record in the 110-meter hurdle race.

A. breaking　　　　 　　　B. having broken　 　　　　C. to have broken　　 　　　D. break

63. (2007 重庆卷B)The children went home from the grammar school, their lessons _______ for the day.

A. finishing 　　　　　　　　 　B. finished　　　　　 　　　　 C. had finished　 　　　 　　　D.were finished

62. (2007 浙江卷A)______ by a greater demand of vegetables, farmers have built more green houses.　

A. Driven　　 　　　　　B. Being driven　　　 　　C. To drive　　　 　D. Having driven

61. (2007 浙江卷A)The children talked so loudly at dinner table that I had to struggle ______.　 A. to be heard　　 B. to have heard　　　 C. hearing　　 D. being heard

60. (2007 天津卷B)The glass doors have taken the place of the wooden ones at the entrance, ________ in the natural light during the day.

A. to let　　 　　　　　 　　　B. letting　　 　　 　　　　C. let　　　　　 　　　D. having let

50. (2007 四川卷A)The flowers his friend gave him will die unless ________ every day.　

A.　 watered　　　 　　　B.　 watering　 　　　　　C. water　　　 　　　　　D.　 to water

49. (2007 四川卷C)Peter received a letter just now ________ his grandma would come to see him soon.　 A．said　　 　　　　　　　　　　 　B．says　　 　　　　　　 C．saying 　　　　　　　　 　　D．to say

48. (2007 上海春D)She wants her paintings　　 in the gallery, but we don t think they would be very popular. A．display　　　 B．to display　　　　　 C.displaying 　　D．displayed

47. (2007 上海春A)　　 the safety of gas, the government has checked the city’s gas supply system thoroughly.

A．To ensure　　　　　　　　 B．Ensuring　 C．Having ensured.　　　 D．To have ensured