82． He is so s____________ that he never takes others’ advice.

81. The little girl hasn’t been back home, and her parents are c____________ about her safety.

80． We are lacking in experiment and ____________ (因此)we failed.

79． During daytime(白天), stars are ____________(看不见的)in the sky.

78. We needn’t have been dressed like this, it’s an _____________ (非正式的) party.

77. 　The book ____________(吸引，感染) to many young people in the 1980s.

76. Americans have the reputation of being very _______________( 好客的) people.