Li Ning was able to set up a school for gymnasts in 1991, ______ he has continued to help young people to achieve their sporting ambitions.
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when
B
dring which
C
since then
D
since when
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、The virtues of thrift（节俭）and hard work is vital for everyone, is often the case in any society.
#78643
A
as
B
that
C
when
D
where
The weather turned out to be very good, was more than we could expect.
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A
what
B
which
C
that
D
it
______ is known to us, the 16th Asian Games will be held in Guangzhou, China in November, 2010.
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As
B
It
C
Which
D
What
I’ll spend my holiday in Qinghai, _____ lies in the north of China.
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A
who
B
which
C
where
D
that