---Don’t climb the ladder. It’s broken. ---______   
#4225
A
Why not?
B
Don’t mention it.
C
OK. Thank you.
D
So what?
推荐题目
--- How often do you eat out? ---- _________, but usually once a week.
#2968
A
Have no idea
B
It depends
C
As usual
D
Generally speaking
—Would you please help me with the box?—________.
#789
A
Yes,please
B
No,please don’t
C
With pleasure
D
My pleasure
—Can you work out this math problem? —Yes. ______ 
#21495
A
It’s a piece of cake.
B
Do please.
C
It’s too hard.
D
Well done!