2. 外语
  3. If we________your phone number, we could have contacted you earlier.

If we________your phone number, we could have contacted you earlier.

admin2022-04-11  48
问题 If we________your phone number, we could have contacted you earlier.
选项 A、knew
B、had known
C、know
D、will know
答案B
解析 本题考查If引导的非真实条件句——虚拟语气的用法。当表述的内容与过去事实相反时，If从句用过去完成时，主句用would／could／should／might have done结构。根据句意和主句结构，确定从句应用过去完成时had known，故本题答案为B)。
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