问题补充:
—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
答案:
A. was painting
B. will be painting
C. have painted
(答案→)D. have been painting
解析:考查情景交际。“杰克,你为什么看起来这么累?”“我一直在刷房子,到明天我必须刷完。”根据句意可知,刷房子的动作截至说话时一直在做,还将继续下去。故用现在完成进行时。故选D。