The police need some more evidence ________they can make a conclusion.
#32061
A
since
B
before
C
after
D
until
推荐题目
I was about to give up my effort to solve a problem __________ a good idea struck me.
#30835
A
when
B
while
C
until
D
before
Our class will go to the National Park next Sunday ——________ it rains, of course.
#31174
A
when
B
unless
C
for
D
whether
—Did you meet with the famous star?—______ I had come here earlier.
#33473
A
Only if
B
If only
C
But for
D
As long as