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Why did they keep trying _________ they must have known it was hopeless?
#32404
A
if
B
because
C
when
D
whether
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I have many friends, _____ some are businessman.
#33775
A
of them
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from which
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who of
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Bears often hide themselves in places     can’t be found by hunters．
#32669
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in which
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#79910
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The police stopped the car______ speed was more than 120km per hour.
#33272
A
whose
B
which
C
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D
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