--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

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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

--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
--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

--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

D
首先,window是没可能自己清洁自己,所以是 被动语态
然后,后面的“for weeks”为持续几个星期,为 持续性动词.....
因此选D

D

d