______ he has made up his mind, no one can make him change it.
#31808
A
Unless
B
Once
C
Until
D
As
推荐题目
In time of serious accidents, ________ we know some basic things about first aid, we can save lives.
#30162
A
whether
B
until
C
if
D
unless
The boy was so tired that he fell asleep _____________ his mother could take off his clothes．
#30097
A
before
B
after
C
while
D
where
Schools in the north tend to be better equipped, ______ those in the south are relatively poor.
#30796
A
as
B
unless
C
when
D
while
The information has been announced______ the president is going to visit China next year.
#34004
A
that
B
which
C
as
D
whose