He realized his mistakes and took action to reduce the loss _________ it was too late.
#55986
A
until
B
when
C
before
D
as
推荐题目
My grandparents like to live in a house _______ is not very big but bright and comfortable.
#58280
A
that
B
who
C
what
D
whose
－_____do you tell your mother about your English result?－By using my mobile phone.
#56348
A
What
B
How
C
Why
D
Where
The rivers will become dirtier and dirtier ______ we take action to protect them.
#56392
A
since
B
if
C
until
D
unless