-------- The window is dirty. --------- ...

-------- 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

D 【解析】试题分析：考查时态和语态。现在完成时可以表示过去发生的事情对现在的影响，也可以表示过去发生的事情持续到现在。句意：—窗户很脏。—我知道，这些窗户已经很几个星期没有被擦了。指过去没有擦窗户的事情对现在的影响就是窗户很脏。故D正确。考点：考查时态和语态

考点分析：

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