________ Anirban  Maitra, a professor at Oxford University, Jack’s success would not have been possible.

A．If it weren’t for B．Were it not for
C．Had it not been for D．If it hasn’t been for

C

解析試題分析:考查虛擬語(yǔ)氣。從主句would not have been推斷句子應(yīng)該是對(duì)過(guò)去情況的虛擬假設(shè)，所以從句應(yīng)該用had done，故C選項(xiàng)正確。句意：要不是牛津大學(xué)的教授--- Anirban Maitra, 杰克是不可能成功的。
考點(diǎn)：考查虛擬語(yǔ)氣。

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