Don't come ___ you are invited.
#79759
A
unless
B
if not
C
why
D
that
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Study hard , ______ you will not pass the exam .
#32806
A
and
B
otherwise
C
if
D
unless
— Is it OK if I take this seat?—Sorry,___________.
#34157
A
here you are
B
take it
C
it is taken
D
never mind