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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_____ many times, but he still didn’t know what to do next.
#34158
A
Having been told
B
Although he had been told
C
He had been told
D
Having told
you’ve tried it, you can’t imagine how tasty the fish I cooked is!
#31945
A
Unless
B
Because
C
Although
D
So long as
English is a language shared by several diverse cultures，each of——uses it somewhat differently.
#30616
A
which
B
what
C
them
D
those