94. Etiquette means normal 　and polite social behavior.

93. Don’t break school rules.

92. People might feel uncomfortable if you cut in line.

91. You are not allowed 　to talk in class.

90. Don’t drop 　　rubbish 　(垃圾) everywhere.

89. Don’t throw your shoes on the bed.

88. He was ill yesterday. He coughed badly.

87. There seems to be no solutions to the problem.

86. The young men are playing chess in the yard.

85. We both have common hobbies.