Some fish can survive only in salt water, ____ other species can live only in fresh water.
A.since   
B.unless
C.if
D.whereas

___ I had turned the corner, I began to run.
A.scarcely
B.once
C.just
D.hardly

___ you do better work than this, you won’t pass the exam.
A.if
B.although
C.unless
D.when

___ Jackson became famous, he has ignored his old friends. He shouldn’t do that.
A. if
B.ever since
C.even though   
D.due to

He won’t be able to pay for the car ___ his father’s help.
A.until    
B.except
C.unless
D.without

___ efforts to combat it, drug abuse is on the increase.
A.throughout
B.in the event of
C.despite
D.instead of

Some people tell you what they think you want to hear, ___ it is true.
A.whether or not
B.no matter what
C.regardless
D.however

___ the traffic was bad, I arrived on time.
A.although
B.in spite of
C.despite
D.even

Mr. Browning had always liked the sea and ___ they moved to the South Coast when he retired.
A.as
B.since
C.so
D.such

We’re going to lose this game ___ the team doesn’t start playing better soon.
A.although
B.unless
C.if
D.whereas