Which of the following signs can be seen on the door of a shopping mall?
#21211
A
B
C
D
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―May I take your order now?―_________―OK, I’ll come back in a few minutes.
#4038
A
No, we need more time.
B
Could you bring us the bill?
C
Yes, here it is. Thank you.
D
Sure, we’d love to.
 ---Do you mind my opening the window?----______I feel a bit cold.
#1990
A
Of course not.
B
I would rather you didn’t.
C
Go ahead .
D
Why not?
--       , which is the way to the zoo?--Sorry. I’m new here.
#22943
A
Not at all
B
Sorry.
C
Excuse me
D
Thank you