You’ll sound a lot more polite if you make a request _______ a question. 
#26261
A
in the form of
B
in reply to
C
in preparation for
D
in return for
推荐题目
There's a rumor________that he is going to resign.
#25161
A
in the air
B
on the air
C
into thin air
D
in the open air
We’ve talked a lot _______ films. How _____ television now?
#27618
A
of, with
B
with, towards
C
about, about
D
for, about