73.The pets in these cages are one of those ______ . (speak)

72. When I walked past the room , I heard a girl ______ in it . (sing)

71. He thinks his dog is the ______ of all . (clever)

70. At last , they put out the big fire with ______ . (毯子) .

69. My parents are busy getting ready for my grandpa’s ______ birthday . (九十)

68. Each of us is ______ to the man in red for his donations .(感激的)

67. He doesn’t like sleeping at night with the light ______ . (关着)

66. My pet cat ______ himself under the bed , so I failed to find him . (躲藏)