-----The windows must have taken you quite a long time that day.
------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 windows must have taken you quite a long time that day.
------Right. They for weeks.
A.haven’t been cleaned | B.hadn’t been cleaned | C.didn’t clean | D.haven’t cleaned |