Without your help, we ____ this task.A. don't finish B. will not finish C. didn't finish D. would not have finished为什么选D?

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Without your help, we ____ this task.A. don't finish  B. will not finish C. didn't finish  D. would not have finished为什么选D?
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Without your help, we ____ this task.A. don't finish B. will not finish C. didn't finish D. would not have finished为什么选D?
Without your help, we ____ this task.
A. don't finish B. will not finish C. didn't finish D. would not have finished
为什么选D?

Without your help, we ____ this task.A. don't finish B. will not finish C. didn't finish D. would not have finished为什么选D?
实际上已经受到了帮助 所以不可能without 在这里是虚拟语气 虚拟没有受到帮助
由于虚拟的是过去的事情 所以主句用would/might/could +have+done的结构 根据句意 选D