He didn't realize he had forgot his bag _____ the plane had taken off.
#79688
A
unless
B
until
C
if
D
or
推荐题目
I wish there was more information about calories in restaurants. It would make it easier for me to know __________ to eat.
#33008
A
how
B
what
C
when
D
where
The fact Lucy has been admitted into Lanzhou university made us excited.
#30118
A
what
B
that
C
which
D
/
_______these coins are of different shapes, sizes and colors, they all date back to a long, long time ago.
#32529
A
Since
B
Unless
C
Once
D
While
A dozen ideas were considered _______ the chief architect decided on the design of the building.
#32775
A
before
B
whether
C
unless
D
because