—Could you help me with the math problem?—________ Your must be barking up the wrong tree.
#819
A
A pleasure.
B
Hang on a minute.
C
What’s the point?
D
Are you kidding?
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 —The Mars-500 test will take about 520 days. —__________  I hope it goes well.
#24510
A
It’s a pleasure.
B
Good luck!
C
That’s OK.
D
Congratulations!
------I will not come here tomorrow. --------___________to me, because I don’t care.
#2209
A
It does n’t make any difference
B
It makes much difference
C
It does n’t make no difference
D
It makes a difference
--- Could you be so kind as to close the window?---______________. 
#2392
A
With pleasure
B
Go ahead
C
Yes, please
D
That's OK