81. boast of (or about)吹嘘
82. out of breath喘不过气来
83. in brief(=in as few words as possible)简言之
84. in bulk成批地,不散装的
85. take the floor起立发言
86. on business出差办事。
87. be busy with sth。于某事。be busy doing sth.忙于做某事
88. last but one倒数第二。
89. but for (=without)要不是.表示假设
90. buy sth. for...money用多少钱买
91. be capable of能够, 有能力be capable of being +过去分词:是能够被...的
92. in any case(=for love or money, at any rate, at any price, at any cost, whatever happens; anyhow)无论如何
93. in case (=for fear that)万一;
94. in case of (=in the event of)如果发生...万一in the case of至于...,就...而言
95. in no case在任何情况下都不(放句首倒装句)
96. be cautious of谨防
97. center one’s attention on(=focus one’s attention on)把某人的注意力集中在...上
98. be certain of (=be sure of)有把握, 一定。
99. for certain of (=for sure )肯定地,有把握地
100. by chance(=accidentally, by accident)偶然