(2013·河南郑州一模)—Hey, you haven't been acting like yourself. Everything OK?—________.
#943
A
Sure, it is      
B
I'm fine, thanks
C
That's good
D
It's a pleasure
推荐题目
--How often do you eat out?--______, but usually once a week.
#2519
A
Have no idea
B
It depends
C
As usual
D
Generally speaking
—I’ve just heard that the lecture to be given by the Nobel winner has been cancelled.— Oh, no! ______.
#2419
A
It’s wonderful
B
It doesn’t matter
C
I have no idea
D
I was looking forward to that
---Would you like to go bike riding with us tomorrow?    --- _________.
#21371
A
Sorry, I’d love to.
B
Sure, I’d love to.
C
Sure, I have to help my parents.
D
Yes, I can. I have a piano lesson.