Wind power is an ancient source of energy ____we may return in the near future.
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A
on which
B
by which
C
to which
D
from which
推荐题目
Between the two parts of the concert is an interval, ___the audience can buy ice-cream.
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A
when
B
where
C
that
D
which
The students _____ are hard-working and ready to help others should be praised.
#77243
A
who
B
whom
C
which
D
whose
My uncle has a lot of books, _______ are about computer science and technology.
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A
most of them
B
most of that
C
most of which
D
and most of which
Those successful deaf dancers think that dancing is an activity sight matters more than hearing.
#77920
A
when
B
whose
C
which
D
where