---So you were in the supermarket __________ you heard a strange sound, right?---That’s true. I ran out as quickly as possible. 
#41416
A
when
B
while
C
then
D
which
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 I’ll give you a phone call        to Paris.
#72058
A
the moment I will get
B
the moment I get
C
at the moment I get
D
at the moment I have get
We stayed in a quiet hotel,__    _.
#69263
A
next to it was a thick wood
B
next to which was a thick wood
C
next to it there was a thick wood
D
next to which a thick wood was