89. but for (=without) 要不是. 表示假设

88. last but not least最后一点但也是最重要的一点

87. last but one 倒数第二.

86. be busy with sth.忙于某事 be busy doing sth. 忙于做某事

85. on business 出差办事.

84. take the floor 起立发言

83. in bulk 成批地,不散装的

82. in brief(=in as few words as possible)简言之

81. out of breath 喘不过气来

80. boast of (or about) 吹嘘