81. boast of (or about) 吹噓
　　82. out of breath 喘不過氣來
　　83. in brief(=in as few words as possible)簡言之
　　84. in bulk 成批地，不散裝的
　　85. take the floor 起立發言
　　86. on business 出差辦事。
　　87. be busy with sth。于某事。 be busy doing sth. 忙于做某事
　　88. last but one 倒數第二。
　　89. but for (=without) 要不是. 表示假設
　　90. buy sth. for…money 用多少錢買
　　91. be capable of 能夠， 有能力
　　be capable of being +過去分詞：是能夠被…的
　　92. in any case(=for love or money, at any rate, at any price, at any cost, whatever happens; anyhow)無論如何
　　93. in case (=for fear that) 萬一;
　　94. in case of (=in the event of)如果發生…萬一
　　in the case of 至于…, 就…而言
　　95. in no case在任何情況下都不(放句首倒裝句)
　　96. be cautious of 謹防
　　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