2. 专升本
  3. ______for their help, we would not shave overcome the difficulties.

______for their help, we would not shave overcome the difficulties.

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问题 ______for their help, we would not shave overcome the difficulties.
选项 A、Weren’t
B、Had it not been
C、Hadn’t it been
D、Had it been not
答案B
解析 句意：如果没有他们的帮助，我们就不会克服那些困难。本题考查虚拟语气。由主句中“would not have”可知，从句是对过去的虚拟，其结构应为“if+主语+ had+过去分词”。但是当条件句中省略连词if时，可将were，had，should等提到主语之前。如果if是否定句，则not要放在主语之后。故本题选B。
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