that you didn’t care about this matter at all, I should not have wasted m
题型：不详难度：来源：
that you didn’t care about this matter at all, I should not have wasted my time explaining it to you.| A．Should I realize | B．Had I realized | | C．If I realized | D．Did I realized |
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答案
| B |
解析
| 考查条件中与过去事实相反的虚拟语气。其结构为if +主语+had done，主语+would /could/should/might + have done,省略if要倒装，had提前。故选B。 |
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