He had to be reminded two or three times ________ he could avoid making the same mistake.
#33440
A
before
B
until
C
when
D
after
推荐题目
The Voice of China has set up a stage some people can achieve their dreams．
#30505
A
which
B
where
C
that
D
when
Our government has taken some measures to overcome the lack of electricity, but it may take some time _____ we have enough power．
#33827
A
since
B
after
C
unless
D
before
The head of the company promised to deal with matters of this sort _____he returned to his office．
#32768
A
until
B
while
C
by the time
D
the moment
Mike had just finished his lunch and was about to take a break _____ an unexpected visitor came.
#33274
A
when
B
while
C
so
D
for
_______we admit that there are still some problems about NMET,we don’t mean that it is of no use.
#80074
A
Until
B
While
C
As
D
Unless