He made a mistake, but then he corrected the situation _______ it got worse.
#74570
A
until
B
when
C
before
D
as
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(2013·辽宁大连双基测试)His younger sister may already be in high school now, in ________ case this picture book is too childish for her.
#67338
A
that
B
which
C
whose
D
what
I have been keeping the portrait _____ I can see it every day, as it always reminds me of my childhood in Paris.
#68367
A
since
B
where
C
as
D
if
（湖南省怀化市2014年高三第二次模拟考试）25. ______ all of you are top students, only one will be chosen for the coming competition.
#66663
A
While
B
Since
C
If
D
As