题目内容

But for their help, we        the program in time.
A．can not finishB．will not finish
C．had not finishD．could not have finished
D

考查虚拟语气，but for是“要不是”，相当于：if it had not been for their help,实际情况是他们帮忙了，他们不能及时完成计划也是于事实不符合的。
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