. Use your head， you’ll have an idea.
#34383
A
or
B
and
C
but
D
so
推荐题目
The government has taken some measures to solve the shortage of electricity, but it may be some time ____________ the situation improves.
#31321
A
since
B
when
C
unless
D
before
She opened her eyes and was about to cry out ______ she heard her father urgently telling her to keep quiet.
#30841
A
when
B
while
C
before
D
after
He failed in the exam, and I wonder ___ he studied hard in the school.
#80339
A
when
B
that
C
if
D
where
When I got to the checkout counter, I realized I didn’t have enough money, so I kept ________ I really needed and left the rest．
#33433
A
what
B
which
C
that
D
this
We should try every way to develop education, it means slowing down in other fields.
#32319
A
in case
B
even if
C
only if
D
so that