(2013·四川，9)Nowadays people are more concerned about the environment________they live.
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A
what
B
which
C
when
D
where
推荐题目
The latest UK official studies show _______fewer teenagers are now studying foreign languages.
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A
what
B
which
C
that
D
Whether
I shall never forget those years ________ I lived on the farm _______ you visited last week.
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A
when; where
B
which; which
C
when; which
D
which; where
She brought with her three friends, none of ___________ I had ever met before.
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A
them
B
who
C
whom
D
these