He made a mistake, but then he took action to change the situation ________ it got worse. 
#47055
A
until
B
when
C
before
D
because
推荐题目
The car is running ________ its lights ________.
#47626
A
by; open
B
with; on
C
to; for
D
into; off
I’d like a piece of papter_______.
#47207
A
to write
B
to be writing
C
to write on
D
to write with