．The terrible flood swallowed the village ________ the villagers could get away. No one survived it.
#34781
A
after
B
as
C
since
D
before
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Mary must keep her mind on her medical studies now, so it would be years ______ she could think about marriage.
#32683
A
before
B
when
C
since
D
until
All the students were studying in class Tom;he was playing football on the playground.
#79707
A
except
B
besides
C
except for
D
except on