（2010·长春模拟) she is not so cheerful she used to be?
#85324
A
How is it that；as
B
Why is it that；what
C
Is it why；that
D
How it is that；as
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It is culture more than anything else determines how a nation’s civilization evolves.
#85038
A
that
B
which
C
why
D
as
It was not until mid-night _____ he went back home after the experiment.
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A
when
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/
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A
did I come
B
then I came
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that
B
before
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when
D
since