----Hi, Tracy; how are you doing?
-----I’m tired out, for I my living room all day.
A. painted
B. had painted
C. have painted
D. have been painting
网友回答
A. painted
B. had painted
C. have painted
(答案→)D. have been painting
解析：这题用现在完成进行时，表示动作从过去到现在一直在进行，也可能刚刚结束，但是动作的影响还在。就像这道题，Tracy一直在粉刷起居室，所以现在很累。