．—Why,Jack,you look so tired!---Well,I _____the house and I must finish the work tomorrow．A．was painting B．will be painting C．have painted D．have been painting

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．—Why,Jack,you look so tired!---Well,I _____the house and I must finish the work tomorrow．A．was painting B．will be painting C．have painted D．have been painting
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．—Why,Jack,you look so tired!---Well,I _____the house and I must finish the work tomorrow．A．was painting B．will be painting C．have painted D．have been painting
．—Why,Jack,you look so tired!
---Well,I _____the house and I must finish the work tomorrow．
A．was painting B．will be painting
C．have painted D．have been painting

．—Why,Jack,you look so tired!---Well,I _____the house and I must finish the work tomorrow．A．was painting B．will be painting C．have painted D．have been painting
have been painting 是现在完成进行时,have表示“已经发生的”,单纯看be doing表示一直在做,所以整句话可以解释为“我（已经、之前）一直在粉刷我的房子而且我必须在明天完成它.”（因为一直在做这件事,而且明天就要完成时间紧迫,所以jack看起来会那么累）
如果是A,一般后面会加个时间,比如yestaday,表示过去时；B的说法不对,应该改为will paint
c have painted 表示“已经完成”,与后面“必须在明天之前完成”矛盾.
所以选D.
不知道这样解释你会不会明白.

have been 表示过去一段时间内一直在做，并且有继续做下去的意思，根据后文，这道题应该选d

现在完成进行时，表示现在持续的动作并会延续到将来
有TOMORROW 则符合条件

这是现在完成进行时，表示到说话时为止一直在做某事

现在进行完成时：到现在还在持续并有趋势继续持续下去的动作。
注意到tomorrow了吗？暗示这个动作要持续到明天哦，所以要选D；选C的话说明这个动作已经在说话时候完成了（现在完成时：过去某一时间开始并一直持续到现在的动作或状态。）区别在于D持续得更久，而C已经在说话时结束了。...

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现在进行完成时：到现在还在持续并有趋势继续持续下去的动作。
注意到tomorrow了吗？暗示这个动作要持续到明天哦，所以要选D；选C的话说明这个动作已经在说话时候完成了（现在完成时：过去某一时间开始并一直持续到现在的动作或状态。）区别在于D持续得更久，而C已经在说话时结束了。

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have been painting是现在完成进行时，表示从之前某一时刻到现在一直在做。从题意看，“I must finish the work tomorrow. ”说明Jack说话的时候还在paint没有结束。

have done结构表过去发生的事情对现在有影响。过去一直在给房子涂漆，所以看起来很累

以我的观点，不能选B，因为will be doing 是指将来进行时，将要做什么。
而A was doing 是过去进行时，表示过去正在做什么。
C have v+ed 是一般过去式，表示过去某时间发生什么，跟现在没有关系。
D have been done 是现在完成时，跟现在有关系，表示仍持续，比如你的题中I must finish the work tomorrow，...

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以我的观点，不能选B，因为will be doing 是指将来进行时，将要做什么。
而A was doing 是过去进行时，表示过去正在做什么。
C have v+ed 是一般过去式，表示过去某时间发生什么，跟现在没有关系。
D have been done 是现在完成时，跟现在有关系，表示仍持续，比如你的题中I must finish the work tomorrow，也就是说明I 还得干活，还要持续到明天才结束。
希望能帮到你

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