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  After studying mass of data，they drew a conclusion________China is still a developing country.
#30622
A
that
B
which
C
／
D
where
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The roof fell ______ the PLA men had time to rescue the child trapped in the house.
#33834
A
until
B
unless
C
before
D
because
It was three years_______ he came back.
#31134
A
that
B
since
C
before
D
when
It was the most important tomb ____ had ever been founded.
#32159
A
/
B
where
C
that
D
which
We should be able to do the job for you quickly, ____________ you give us all the necessary information.
#32371
A
in case
B
so long as
C
if only
D
so far as
Advances in using genes as well as nanotechnology make it likely __humans will live in the future beyond ____has been possible in the past.
#34087
A
that ,which
B
what, that
C
that ,what
D
where , what