The school rules state that no child shall be allowed out of the school during the day, __________ accompanied by an adult.
#32564
A
once
B
when
C
if
D
unless
推荐题目
（2014年安徽省合肥市高三第三次教学质量检测）31. What the whole nation cares about most at present is ______ the rescue teams could find the missing plane.
#30023
A
that
B
if
C
why
D
whether
It gives his life a flying start ______ he has gone abroad for further education.
#33205
A
what
B
when
C
that
D
how
There’s a feeling in me __________ we’ll never know what a UFO is – not ever.
#32665
A
of which
B
which
C
that
D
what
“Drive-ins” have large parking lots _______ customers are served in their cars by waitresses．
#32714
A
who
B
when
C
which
D
where
– Why didn’t you tell him about the meeting?– He rushed out of the room _____ I could say a word.
#30942
A
before
B
until
C
when
D
after