______ 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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