But for their help, we______the program in time.A、can not finishB、will not fini

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问题 But for their help, we______the program in time.

选项 A、can not finish
B、will not finish
C、had not finished
D、could not have finished

答案 D

解析本题考查虚拟语气。句意为“要不是他们的帮助，我们不可能及时完成这个项目”。由语境可知，项目已经完成，排除选项A)和B)。couldn’t have done表示不町能做过某事，符合语境。所以答案为D)。

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