Therescuingtaskended________.Thetra

发布时间:2020-07-26 09:13:18

The rescuing task ended ________.The trapped miners had already died when they were finally found.A.in turnB.in vainC.in returnD.in order

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B解析in vain:徒劳,救援队的努力最终白费了,当他们找到那些被困矿工时他们已经死亡了。
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