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why,Jack ,you look so tired well ,I ( )the house and I must

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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
D,这句话的意思是Jack你怎么看起来这么累?Jack回答说我一直在粉刷房子,我必须明天完工.
have been doing表达的是从过去到现在一直在做某事,很明显这句话要强调的是这个.
was painting只能表达过去正在干某事,have painted表示已经完成了,will be表示还没干,都不符合句意.