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
--Guess what! I came across an old friend at the party last night.
A．Sounds good !
B．Very well.
C．How nice !
D．All right.
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