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
It was several minutes _______ we realized what was happening~our dog was trapped in a newly-dug tunnel.
#30391
A
since
B
before
C
until
D
while
It’s not easy to change habits, ______ with awareness and self-control, it is possible.
#31185
A
for
B
or
C
but
D
so
The most interesting thing to the small boy was _______ he got close to the door, it would open of itself.
#31410
A
that as
B
that that
C
what that
D
what when
Life is like a long race___ we compete with others to go beyond ourselves.
#33091
A
why
B
what
C
that
D
where
In China ,the number of cities increasing development is recognized across the world.
#33385
A
where
B
which
C
whose
D
that