Question 31 - 33 refer to following conversation:

M-Cn: Mary? I'm working on the bill for one of Dr. Singh's patients, and I keep getting an error message for the code I'm using...

W-Am: Oh! The billing codes recently changed. You must be referring to the old list.

M-Cn: Do you have the updated one?

W-Am: Yes, right here. Which procedure is it?

M-Cn: A blood test

W-Am: All right ... Here's the code you should use.

M-Cn: Thanks! Could I get a copy of that list?

W-Am: Sure. But Jheard they'll be adding the codes to our billing software soon, so we won't need to deal with paper lists anymore.

31. What is the man having trouble with? A. Conducting a test B. Preparing a bill C. Contacting a patient D. Shipping an order (ảnh 1)

31. What is the man having trouble with?

What caused a problem? A. A staffing change B. A rainstorm C. A typographical error D. A road closure