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英语翻译
Without the sun,life as we know it _____.
A.would not exist B.would not have existed
C.did not exist D.was not existing
人气:258 ℃ 时间:2020-02-05 13:58:36
解答
选 A...根据句意判断为虚拟语气,排除后两项,判断时态为现在的虚拟而不是对过去的虚拟,所以不用have done
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