单项选择题

—Would you mind repeating what you said, I didn't ______.
—Of course not.

A．catch on
B．go on
C．keep on
D．insist on
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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
单项选择题
I have done much of the work. Could you please finish ______ in two days
A．the rest
B．the other
C．another
D．the others
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