—I wonder how much you charge for your services.—The first two are free ________ the third costs $30.
#30476
A
while
B
until
C
when
D
before
推荐题目
—May I go now?—__________ you've finished your work, you may go.
#29947
A
After
B
Although
C
Now that
D
As soon as
—The rescue team are considering ______they can do more for the people suffering from the snow storm.—So they are.
#34330
A
what
B
whatever
C
if
D
how
__________ the kids have left home, we’ve got a lot of extra space.
#33149
A
As soon as
B
While
C
Now that
D
Before
This is a kind of effective classroom teaching ______ students learn independently and cooperatively.
#30634
A
where
B
which
C
what
D
when
It was not until he came back _____ he knew the police were looking for him.
#34711
A
which
B
since
C
that
D
before