—Mom, shall we have supper now?—Oh, we won’t have supper ______ your dad comes back.
#58373
A
until
B
since
C
while
D
after
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She is very good at painting. She can paint _______ her teacher. 
#58538
A
as better as
B
as well as
C
as good as
D
so well as
You will fail the English exam ________ you study hard.
#57214
A
however
B
anyway
C
unless
D
but