To use a foreign language effectively, you need to understand the culture________ it is spoken.
#66906
A
what
B
where
C
why
D
which
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_____, the weather turned out to be very hot that day.
#73472
A
It was said in the newspaper
B
As was reported on the radio
C
Just like the weather report says
D
It so happened as you told me
The clock was striking twelve ______ down the street. 
#74557
A
because I walked
B
as I walked
C
since I was walking
D
while I was walking