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