She had just finished her homework ____ her mother asked her to practice playing the piano yesterday.
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A
when
B
while
C
after
D
since
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I can’t tell you the exact time when I will get there, maybe at eight or at nine or still later._______, I’ll be there as early as I can.
#33483
A
Anyhow
B
Thus
C
Therefore
D
However
Wind power is an ancient source of energy _____ we may return in the near future.
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A
to which
B
by which
C
from which
D
on which
The past year has seen people around the world honoring Nelson Mandela, _____ passed away on Dec 5 at the age of 95.
#30365
A
who
B
which
C
that
D
when
(2014·山西部分重点高中高三联考)Mrs Black had such a wonderful time________she visited her friends in Sydney last year.
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A
when
B
that
C
which
D
as
Although he has become wealthy, Mr. Wood remains _________ he used to be ,modest and friendly .
#31983
A
which
B
where
C
what
D
that