The government has taken some measures to solve the shortage of electricity , but it may be some time _________the situation improves.
#31957
A
since
B
when
C
before
D
unless
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We’d better stay here a little longer he turns up unexpectedly.
#30909
A
although
B
in case
C
since
D
if only
_______ the house is empty, memories flood my mind of a time when it was filled with life.
#33568
A
Since
B
Unless
C
As if
D
Even though
It was not until he came back _____ he knew the police were looking for him.
#34711
A
which
B
since
C
that
D
before