____ there was no electricity, I was able to read because I had a candle.
A.unless
B.only if
C.even
D.even though

Young people know what’s going on ___ communications are so good.
A.since   
B.and
C.so
D.yet

They have  not seen their uncle ___ 1975.
A.until
B.from
C.in
D.since

___ Marge is an honest person, I still wonder whether she’s telling the truth about the incident.
A.though
B.since
C.in spite of
D.in the event that

___ his exhaustion, he won the marathon by nearly three minutes.
A.although
B.despite
C.in spite
D.however

He could not have known what was in the letter ___ he had written it himself.
A.until    
B.unless
C.if
D.if only

Ever ___ they came to live here, they have hated everything about this place.
A.since   
B.when
C.though
D.if

___ you work harder, you are going to fail your exams.
A.if
B.because
C.although
D.unless

The road will remain safe ___ the flood washes out the bridge.
A.unless
B.as long as
C.providing that
D.since

I was about to accept his offer ___ my brother told me that he was a notorious liar.
A.since   
B.so
C.then    
D.when