84.　 This is a s_______________ day in the history of our country.　 (special)

83.　 Can you s_______________ some time to help me?　 (spare)

82.　 Florida is a s______________ state of the U.S.　 (southern)

81.　 Water in a s____________ state is ice.　 (solid)

80.　 His son serves as a s______________ in Tibet.　 He joined the army in 2003. (soldier)

79.　 Our path in life will not always be s______________. (smooth)

78.　 It’s nothing serious, just a s____________ fever.　 (slight)

77.　 We have to make knowledge work for us, and not become its s______________.(slaves)

76.　 He found himself in a difficult s_______________.　 (situation)

75.　 How s____________ of you to do that kind of thing! (silly/strange)