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I was about to leave _____ the telephone rang.
#79654
A
then
B
when
C
that
D
and when
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There’s no way of knowing why one man makes an important discovery         another man, also intelligent, fails.
#30827
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since
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—How long will it be ________ the 30th Olympic Games is held in London? —It won’t be two years, I think. 
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Don’t be afraid of asking for help ___________ it is needed.
#30204
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The pretty girl is always busy helping her mother with the housework _________ I go to visit her family.
#32122
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every time
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every time when
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at every time
D
however time
The hungry man eats his food _______he hadn ' t eaten for a  week.
#32409
A
as if
B
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