The days are gone________you can breathe fresh，unpolluted air or drink clean, unpolluted water in the countryside.
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A
when
B
that
C
where
D
which
推荐题目
Do you have any idea of how many gold medals China won in the 16th Asian Games, ______ was hosted in Guangzhou?
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A
as
B
whose
C
that
D
which
The policemen rushed to the place a bank robbery（抢劫案） had happened, but the robbers（抢劫者） had disappeared from sight.
#78456
A
which
B
that
C
what
D
where
Nowadays people are more concerned about the environment ___ they live.
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A
what
B
which
C
when
D
where
Here are some Christmas presents, ____you can choose one for yourself.
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A
in which
B
from which
C
between which
D
through which