单项选择题

They overcame all the difficulties and fulfilled the plan ten days ahead of schedule, ______was something we had not expected.

A．that
B．this
C．it
D．which
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单项选择题
The Prime Minister refused to comment on the rumor that he had planned to______.
A．discharge
B．dismiss
C．resign
D．resume
单项选择题
I support your decision, but I should also make it clear that I am not going to be ______ to it.
A．connected
B．fastened
C．bound
D．stuck
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