By the year of 2053 there will be 487 million aged people in China， means that one third of the population will be over 60.
#75075
A
that
B
which
C
what
D
where
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Taobao is Asia’s largest retail（零售的） network platform, ______ people can buy and sell many kinds of things．
#78205
A
when
B
whose
C
that
D
where
I believe that the 21st century is one ______ China will become one of the most powerful economic countries.
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A
which
B
that
C
when
D
where
Nowadays people are more concerned about the environment _______ they live.
#76483
A
what
B
which
C
when
D
where
When I arrived, Bryan took me to see the house_ I would be staying.
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A
what
B
when
C
where
D
Which