---The window must have taken you quite a lot of time that day.
--- You are right. They ________ for weeks.
A.haven’t been cleaned | B.hadn’t been cleaned |
C.didn’t’ clean | D.haven’t cleaned |
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---The window must have taken you quite a lot of time that day.
--- You are right. They ________ for weeks.
A.haven’t been cleaned | B.hadn’t been cleaned |
C.didn’t’ clean | D.haven’t cleaned |