________ a two-year period, Nancy became addicted to painkillers （止疼药）.
#34784
A
Beyond
B
Above
C
Since
D
Over
推荐题目
--- I wonder how much you charge for your service. --- The first two are free ______ the third costs $30.
#32246
A
while
B
until
C
when
D
before
__ unemployment and crime are high, it can be assumed that the latter is due to the former.
#80573
A
Before
B
Where
C
Unless
D
Until
Though the impressionists’ paintings were not popular when they first appeared, they are now accepted as the beginning of ______ we call “modern art”.
#30124
A
that
B
what
C
which
D
why
The roof fell ______ the PLA men had time to rescue the child trapped in the house.
#33834
A
until
B
unless
C
before
D
because