71. The team has been working overtime on the research project ( ).

70. The medical experts warned the authorities of the danger of diseases in the ( )of the earthquake.

69. The tuition fees are ( )to students coming from low-income families.

68. The bar in the club is for the ( )use of its members.

67. She’s always been kind to me –I can’t just turn ( )on her now that she needs my help.

66. The painting he bought at the street market the other day was a( ) forgery.

65. It is absolutely essential that William( ) his study in spite of some learning difficulties.

64.( )at in his way, the situation doesn’t seem so desperate.

63. It is not uncommon for there ( )problems of communication between the old and the young.

62. Overpopulation poses a terrible threat to the human race. Yet it is probably ( )a threat to the human race than environmental destruction.

61. The research requires more money than ( ).