单项选择题

--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

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单项选择题
Please give this notebook（）comes for it.

A. to whomever
B. to whoever
C. whomever
D. whoever
单项选择题
（）seemed to be no opposition to the proposal.

A. They
B. There
C. What
D. It
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