44. are being developed 45. What a lovely party! Its worth_________________.

　　46.Though you stay in the sea for weeks, you will not____________ the outside world.

　　47. Cancer is _________________ heart disease as a cause of death.

　　48. It is a pity that we should stay at home when we have ______________.

　　49. I would ______________ a court of law if I hadnt been so desperate.

　　50. John cannot afford to go to the university, _________________.

　　51.I dont mind your_____________ the decision as long as it is not too late.

　　52. I suggested he ____________________(使自己适应)his new conditions.

　　53. I have no objection_______________________(再听听你的故事).

　　54. This popular sports car___________________(正在生产出来)out at the rate of a thousand a week.

　　55. _____________________________ (请你找张空白纸)and write your name at the top?