—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：考查时态语态，因为窗户是几个星期没有被檫了，所以用现在完成时的被动语态，句意是：--窗户很脏。--我知道。有几个星期没有檫了。选D。