—I wonder how much you charge for your services.—The first two are free      the third costs $30.
#66661
A
while
B
until
C
when
D
before
推荐题目
______the road ,don’t forget to look both ways.
#68474
A
As crossing
B
While you cross
C
While crossing
D
Cross
 ______ the poem a second time, the meaning will become clearer to you.
#71969
A
You having read
B
While reading
C
When you read
D
If reading
I lived in Beijing,_____is the capital of China.
#72961
A
which
B
where
C
that
D
what