Why was the house on fire? _______ lightning hit it.
#57989
A
Because
B
Since 
C
As
D
Because of
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— When will you come to Daqing?— I will call you _____I arrive.
#58231
A
till
B
while
C
as quickly as
D
as soon as
I collect stamps, I collect tickets, _____.
#58128
A
in fact
B
too
C
as well as
D
either
____ it is rainy today, ____ he still works outside.
#57229
A
Although, but
B
But, although
C
/, although
D
Although, /