87. be available to sb.可用,可供
88. be bound to一定
89. be capable of doing能够
90. be concerned with 关心…，涉足…
91. be dying to渴望
92. be fed up with受够了be tired of
93. be in hospital 住院
94. be in season 上市的/in peak season旺季
95. be in the mood to do sth. 想做
96. be pressed for time时间不够
97. be tied up with忙于
98. be under the weather 身体不好
99. beat around the bush 拐弯没角
100. beat the crowd 避开人群
101. before long 不久以后
102. behind schedule 误点
103. bent on sth. 下定决心做…
104. beside point 离题的,不相干的
105. beyond one's ability超越某人的能力106. beyond question 毫无疑问
107. book on reserve 须留的图书
108. booked up 订完了