In a sport team each player has a clear role，and there are few occasions ___________ members are confused or uncertain of their roles.
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A
why
B
that
C
when
D
in which
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Whether you like it or not, we live in a particular community_______ exchanging presents is an important part of communication.
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A
which
B
that
C
when
D
where
I work in a business_________almost everyone is waiting for a great chance.
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A
how
B
which
C
where
D
that
Diamond, _________, is the hardest of all materials.
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A
like we know
B
since we know
C
we know
D
as we know
Move the plants to a south-facing window, ________they can absorb daytime heat.
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A
that
B
when
C
which
D
Where
Rescuers are still searching for the other 19 missing miners, _______survival chances are small.
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A
who
B
which
C
whom
D
whose