-The window is dirty. -I know. It for weeks.A. hasn’t cleanedB. didn’t cleanC. wasn’t cle

问题补充：

-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

答案：

A. hasn’t cleaned

B. didn’t clean

C. wasn’t cleaned

(答案→)D. hasn’t been cleaned

解析：句意：--窗户很脏。---我知道。它有数周没被清洁了。这里强调没有被清洗已经持续了几周，可能还要进行下去，符合现在完成进行时的用法，而且the windows和clean是被动关系，选D。