-- Sorry, it's already 6 o’clock. I have to be off for an appointment. --- OK. .

-- Sorry, it's already 6 o’clock. I have to be off for an appointment.

--- OK. ________. 

A. It couldn’t be better                                   B. You really have me there

C. Let’s call it a day                                     D. Take your time

试题答案

C