—Do you mind if I smoke?  —____ 
#3930
A
Why not?
B
Yes, help yourself
C
Go ahead
D
Yes, but you’d better not
推荐题目
 —Can I help you with your heavy box. — ____________.
#3338
A
That’s very kind of you
B
With pleasure
C
You can, please
D
Ok
---Whose advice do you think I should take?  ---______. 
#2136
A
It’s up to you
B
You speak
C
That’s it
D
You got it
--- Could I ask you a rather personal question?--- Sure, ____.
#2439
A
pardon me
B
go ahead
C
good idea
D
forget it