______(如果不是警察及时相救), he could have lost his life.If the police hadn’t rescued him

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问题 ______(如果不是警察及时相救), he could have lost his life.

选项

答案 If the police hadn’t rescued him in time

解析分析句意可知，这里应该使用虚拟语气，表示与过去事实相反的一种可能性，因而从句中应该用过去完成时。

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