3. —The windows are dirty.

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3. —The windows are dirty. —I know. They _________ for weeks. A. haven’t cleaned B. didn’t clean C. weren’t cleaned D. haven’t been cleaned
麻烦您给解答一下,谢谢

解题思路：理解句子的语义；熟悉现在完成时的使用条件和结构；掌握被动语态。
解题过程：
如下
D 现在完成时。时间段一直持续到现在，且clean与windows是被动关系。

3. —The windows are dirty. the windows are dirty是什么意思? 一道英语题~~~----The doors and windows are so dirty._________ we Shall ______ clean the dirty windows? the windows were very dirty,but he them at last. The windows are _____ the wall. There are four windows () the walls. the windows are open 反意疑问句 Oh,dear,The windows are still open. —What are you doing there?—I am doing the _____.How dirty th the more dirty they are,the more you love them The windows are all（）.They are not（）