He made a mistake，but he corrected the situation it went worse．
#31964
A
until
B
when
C
before
D
as
推荐题目
I was close to being killed the other day. A car passed me at ____ I thought was a dangerous speed.
#34643
A
as
B
which
C
what
D
that
____ Helen’s knowledge and vocabulary expanded, she asked more and more questions.
#31493
A
When
B
While
C
As
D
Before
The fleet made several expeditions _______ the exploration was stopped.
#32794
A
when
B
before
C
while
D
since
Americans _________sent a message to the world________ we have never been a collection of Red States and Blue States: we are, and always will be, the United States of America.
#33411
A
that, \
B
who, that
C
who, when
D
that, what
______ you understand it, it’s easy for you to obey it.
#33755
A
As soon as
B
Once
C
Unless
D
The moment