Although the police thought he was the most likely one, _____ they had no exact proof about it, they could not arrest him.
#32949
A
when
B
until
C
before
D
since
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We need some more facts and figures __________ we take the final decision.
#31598
A
since
B
before
C
after
D
until
_________ the Internet is bridging the distance between people, it may also break some families or cause other family problems.
#32019
A
As
B
If
C
While
D
Since
You should try to get a good night’s sleep_________much work you have to do.
#79769
A
however
B
no matter
C
although
D
whatever