2. 外语
  3. ______ their help, we would not have succeeded.

______ their help, we would not have succeeded.

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问题 ______ their help, we would not have succeeded.
选项 A、Hadn’t been for
B、Had it not been for
C、It hadn’t been for
D、Had not it been for
答案B
解析 本句是省略了if的虚拟条件句，原句的正常语序为：If it had not been for their help．省略if时，只提前助动词，否定词not不用提前，即Had it not been for….故答案为B。
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