![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
Speaker A: Can you come to my office early to help me with my paper? Speaker B: ______
A.
Thank you for your invitation. I'm sure to be there.
B.
I'd like to, but I can't leave until I've typed out the letters.
C.
By all means. I have to finish my own paper first.
D.
What do you expect me to do for you?