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
I always take it for granted that I am ______ intelligent than she is.
A．very
B．too
C．far more
D．far better
单项选择题
The snow fell ______ fast that our footsteps were covered up in a few minutes.
A．so
B．much
C．little
D．very
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