题目内容
Rescuers are ______ for the safety of the two men trapped in the mine.
| A.grateful | B.concerned | C.extreme | D.frightened |
B
试题分析:句意:营救人员为困在井下的两个人的安全担心。be concerned for/about 为……担心忧虑;be grateful to sb for sth 因某事而感谢某人;extreme极度的;frightened恐惧的。根据句意,可知选B。
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