She has never done anything for them, _______ they have done everything for her.
#30515
A
when
B
whereas
C
as
D
because
推荐题目
It was early morning in London _____ Prime Minister Cameron arrived to give his speech.
#30166
A
where
B
when
C
before
D
that
Few people paid full attention to their health conditions ________ they were seriously ill.
#31465
A
when
B
if
C
until
D
after
______ most of us considered solving the problem as soon as possible, he considered it of no importance．
#33475
A
When
B
While
C
If
D
As
She is a crazy fan of this singer. ________ she listens to his songs hundreds of times, she will never get tired.
#32496
A
If
B
Unless ．
C
As long as ．
D
Even if