81. Book 1 is compulsory while Book 7 is ________(选修的).

80. Many representatives opened blogs to make r______ (建议)during the NPC and CPPCC sessions.

79. I have a certificate of tourist _______(资格).

78. We _________(感谢) the wonderful work of you.

77. There is a________(充分的)evidence on both sides.

76. He has enough money so that he can live ______(舒适).

75. Don’t worry. It's just a r_______(例行的) medical examination.

74. We’re concerned about the fate of the _________ (代替) teachers.

73.　 This project is _______________(运作) very well-more and more children are getting what they need.

72.　 You have to make sure about the _____________(分配；分发) of these goods to each house.