题目内容
（请给出正确答案）
_____we hadn't made any mistakes in the calculations!
A．But for
B．If only
C．Last
D．Without
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A、 Hadn’t it been for
B、Had it not been for
C、Had it been for
D、Had not it been for
A、hadn’t we better got start
B、hadn’t we better get start
C、hadn’t we better get started
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A)didn't
B) hadn't
C) wouldn't
D) won't
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