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

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：考查时态和语态。结合上下文可知用现在时态，从时间状语for weeks可知使用现在完成时，并且window与clean之间为被动关系，故选D答案。句意：——窗户脏了。——我知道，已经几个星期没有清洁了。