We had to stay at home ______ it was raining hard.
#56188
A
of
B
because
C
because of
D
as
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Why was the house on fire? _______ lightning hit it.
#57989
A
Because
B
Since 
C
As
D
Because of
You will not succeed ______ you work harder.
#56874
A
if
B
when
C
unless
D
because.
Hurry up ____ finish your soup!
#58292
A
or
B
but
C
and
D
while