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
We are having a class get-together. It’s been twenty years we graduated from high school.
#33241
A
before
B
since
C
after
D
when
Our teacher looked here and there on our playground ________ looking for something.
#31947
A
even though
B
even if
C
as if
D
only if
Considering the time limits, we also provide CDs ________ our students may prefer to study at home.
#30813
A
so that
B
so long as
C
in case
D
as if
I’d like to arrive 20 minutes early I can have time for a cup of tea.
#31258
A
as soon as
B
as a result
C
in case
D
so that
He was about to make a call to Tom _____ Tom patted me on the shoulder.
#31555
A
as
B
until
C
while
D
when