问题
选择题
| — 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
答案：D
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| — 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：D