We were about to start out________ our friends called us up from Shanghai.
#31167
A
when
B
while
C
until
D
before
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 It was several years ________ I realized ________ David had lied to me.
#30066
A
when; that
B
that; when
C
before; that
D
until; why
You may use the room as you like      you clean it up afterwards.
#31417
A
so far as
B
so long as
C
in case
D
even if