Two years has _____ _____(流逝) before we knew it.
问题描述:
Two years has _____ _____(流逝) before we knew it.
答
Two years had (gone by )(流逝) before we knew it.
我认为has 应该是had ( 即过去完成时,动作发生在KNEW 前)
加油!不明白再问!
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