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The policeman is still not sure ______ the young man killed himself or was killed.
#56983
A
if
B
that
C
whether
D
weather
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Never stand up ________ you are asked to.
#58222
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if
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since
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unless
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Her grandparents are still in good health_____they are over eighty.
#57739
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though
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as soon as
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______ he became seriously ill, he still went on working.
#58164
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B
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John decided to buy a computer, _________ it was a little expensive for him. 
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though
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 I want to know          Tom can help me with my maths.
#56581
A
if
B
so
C
because
D
although