But for their help,we the program in time.A.cannotfinishB.willnotfinishC.hadnotfinished

题目内容(请给出正确答案)

But for their help,we the program in time.

A.cannotfinishB.willnotfinish

C.hadnotfinishedD.couldnothavefinished

参考答案和解析
正确答案:D
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