2. 从业资格
  3. __________your valuable help,we couldn't

__________your valuable help,we couldn't

最全题库2022-08-02  32
问题 __________your valuable help,we couldn't have finished the experiment ahead of time.A.If it were not forB.Had it not been forC.Were it not forD.If it has not been for
选项 A.If it were not for
B.Had it not been for
C.Were it not for
D.If it has not been for
答案 B
解析 由主句的谓语动词形式可以推断，此处考查与过去事实相反的虚拟语气，条件句用过去完成时。如果省略if，句子要倒装，将had放置在句首，因此选B。
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中学英语学科知识与教学能力

教师资格笔试

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