Schools in the north tend to be better equipped, ______ those in the south are relatively poor.
#30796
A
as
B
unless
C
when
D
while
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________ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
#30263
A
Even if
B
As far as
C
If only
D
So long as
The stranger shook me by the hand warmly ___ he were to say he knew me well.
#31559
A
even if
B
when
C
if
D
as if