- be worth doing值得（做）;
- be unsure of不确定
- be cognizant ofv.认识到;
- be clever atv.擅长;
- be bound forv.开往…，以…为目的地;开赴;
- be away离开，出发;
- be at issue有问题
- be appointed ambassador to ...被任命为大使。。。
- be anxious forv.渴望，担忧;不放心;挂心;
- be annoyed at被（某事）烦扰;
- be mad about疯狂于;
- be infested withv.多得成灾;
- be generous in乐于…;
- be favorable to有利于，赞成;
- be expert at做个专家
- be entitled to有…的资格 有权;
- be due到期;
- be through with已结束;洗手不干;
- be sworn in[法]宣誓就职;
- be sure of确信;
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