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My friend’s flight had taken off _________ I got to the airport to see him off.
#56042
A
while
B
after
C
before
D
until
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Why was the house on fire? _______ lightning hit it.
#57989
A
Because
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As
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I think he’s been drinking, _________ I’m not completely sure.
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if
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They will lose the game ______they try their best.
#55457
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unless
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You should keep working hard ____ you have passed the exam.
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since
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Playing basketball is sometimes very tiring, ______ I enjoy it very much.
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so
B
but
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if
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or