Although they feel tired,__________they still go on working. 
#56350
A
and
B
but
C
/
D
so
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Give me your telephone number ____I need your help.
#57994
A
whether
B
unless
C
so that
D
in case
My sister ______ go to bed _______ my mother came back last night.
#55654
A
not until
B
doesn't; until
C
didn't; until
D
aren't; until
You can’t get good grades______ you study hard.
#55627
A
when
B
because
C
unless
D
that