---The window is dirty.
---I know. It for ages and I’m considering giving the task to our children.
A. hasn’t cleaned
B. hasn’t been cleaned
C. wasn’t cleaned
D. didn’t clean
网友回答
A. hasn’t cleaned
(答案→)B. hasn’t been cleaned
C. wasn’t cleaned
D. didn’t clean
解析：考查时态语态：句意：--这个窗户很脏。--我知道，已经很长时间没擦了，我在考虑把这个任务给孩子们。可知窗户是过去到现在很长时间没有被擦，用现在完成时的被动。选B。