第四十九组
be sure to (do) 一定，必定
be surprised at 对……感到惊奇
be taken aback 吃惊
be taken by surprise 被突袭
be terrified at 被……吓一跳
be lost in thought 沉思
be through with 结束
be tired from 因……而疲乏
be tired of 厌烦；对……厌倦
be tired out 疲倦极了
be torn open 被撕开
be true of 适用于
be unconscious of 不知道……
be unequal to 无法胜任……的
be unfit for 不适合，不胜任
be united as one 团结一致