---The window is dirty.
----I know. It for weeks.
A. hasn’t cleaned
B. didn’t clean
C. wasn’t cleaned
D. hasn’t been cleaned
网友回答
A. hasn’t cleaned
B. didn’t clean
C. wasn’t cleaned
(答案→)D. hasn’t been cleaned
解析：句子强调对现在造成的影响是好久没有打扫了，句子要用现在完成时。窗户是被打扫，所以注意被动形式。句意：窗户太脏了。我知道。它已经有好几周没有被打扫了。故选D.