Wind power is an ancient source of energy _____ we may return in the near future.
#33026
A
to which
B
by which
C
from which
D
on which
推荐题目
He made a mistake, but finally he solved the problem __________ it got worse.
#30987
A
until
B
before
C
when
D
as
“Every time you eat a sweet, drink green tea.” This is _____ my mother used to tell me.
#29999
A
what
B
how
C
that
D
whether
________ I regret most is that I have promised to make friends with the dishonest girl.
#30318
A
How
B
What
C
Where
D
That
_____ he thought he was helping us with the work , he was actually in the way.
#34578
A
Because
B
If
C
Although
D
When